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56161589 = 118096311
BaseRepresentation
bin1101011000111…
…1010100110101
310220200022012212
43112033110311
5103334132324
65323423205
71251236261
oct326172465
9126608185
1056161589
112977a040
1216984b05
13b834b13
14765d0a1
154de570e
hex358f535

56161589 has 8 divisors (see below), whose sum is σ = 61352640. Its totient is φ = 50984800.

The previous prime is 56161583. The next prime is 56161627. The reversal of 56161589 is 98516165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56161589 - 220 = 55113013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56161583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5744 + ... + 12054.

It is an arithmetic number, because the mean of its divisors is an integer number (7669080).

Almost surely, 256161589 is an apocalyptic number.

It is an amenable number.

56161589 is a deficient number, since it is larger than the sum of its proper divisors (5191051).

56161589 is a wasteful number, since it uses less digits than its factorization.

56161589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131.

The product of its digits is 64800, while the sum is 41.

The square root of 56161589 is about 7494.1036155100. The cubic root of 56161589 is about 382.9538696494.

The spelling of 56161589 in words is "fifty-six million, one hundred sixty-one thousand, five hundred eighty-nine".

Divisors: 1 11 809 6311 8899 69421 5105599 56161589