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56160397 = 109515233
BaseRepresentation
bin1101011000111…
…1000010001101
310220200020120201
43112033002031
5103334113042
65323413501
71251232636
oct326170215
9126606521
1056160397
1129779157
1216984291
13b834407
14765c88d
154de51b7
hex358f08d

56160397 has 4 divisors (see below), whose sum is σ = 56675740. Its totient is φ = 55645056.

The previous prime is 56160383. The next prime is 56160407. The reversal of 56160397 is 79306165.

56160397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79306165 = 515861233.

It can be written as a sum of positive squares in 2 ways, for example, as 39012516 + 17147881 = 6246^2 + 4141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-56160397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56160997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257508 + ... + 257725.

It is an arithmetic number, because the mean of its divisors is an integer number (14168935).

Almost surely, 256160397 is an apocalyptic number.

It is an amenable number.

56160397 is a deficient number, since it is larger than the sum of its proper divisors (515343).

56160397 is a wasteful number, since it uses less digits than its factorization.

56160397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515342.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 56160397 is about 7494.0240858967. The cubic root of 56160397 is about 382.9511602992.

The spelling of 56160397 in words is "fifty-six million, one hundred sixty thousand, three hundred ninety-seven".

Divisors: 1 109 515233 56160397