55608131 has 4 divisors (see below), whose sum is σ = 55652112. Its totient is φ = 55564152.

The previous prime is 55608127. The next prime is 55608143. The reversal of 55608131 is 13180655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55608131 - 2² = 55608127 is a prime.

It is a super-2 number, since 2×55608131² = 6184528466626322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55608094 and 55608103.

It is not an unprimeable number, because it can be changed into a prime (55608101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20036 + ... + 22641.

It is an arithmetic number, because the mean of its divisors is an integer number (13913028).

Almost surely, 2^55608131 is an apocalyptic number.

55608131 is a deficient number, since it is larger than the sum of its proper divisors (43981).

55608131 is a wasteful number, since it uses less digits than its factorization.

55608131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43980.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 55608131 is about 7457.0859590057. The cubic root of 55608131 is about 381.6917439542.

Adding to 55608131 its reverse (13180655), we get a palindrome (68788786).

The spelling of 55608131 in words is "fifty-five million, six hundred eight thousand, one hundred thirty-one".