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56108013 = 3131438667
BaseRepresentation
bin1101011000001…
…0001111101101
310220120120201120
43112002033231
5103330424023
65322331153
71250624133
oct326021755
9126516646
1056108013
1129742865
1216959ab9
13b816610
147647753
154dd48e3
hex35823ed

56108013 has 8 divisors (see below), whose sum is σ = 80565408. Its totient is φ = 34527984.

The previous prime is 56107981. The next prime is 56108029. The reversal of 56108013 is 31080165.

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

It is not a de Polignac number, because 56108013 - 25 = 56107981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56108033) 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, 719295 + ... + 719372.

It is an arithmetic number, because the mean of its divisors is an integer number (10070676).

Almost surely, 256108013 is an apocalyptic number.

It is an amenable number.

56108013 is a deficient number, since it is larger than the sum of its proper divisors (24457395).

56108013 is a wasteful number, since it uses less digits than its factorization.

56108013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438683.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 56108013 is about 7490.5282190243. The cubic root of 56108013 is about 382.8320564759.

Adding to 56108013 its reverse (31080165), we get a palindrome (87188178).

The spelling of 56108013 in words is "fifty-six million, one hundred eight thousand, thirteen".

Divisors: 1 3 13 39 1438667 4316001 18702671 56108013