55672331 has 16 divisors (see below), whose sum is σ = 69255648. Its totient is φ = 43968000.

The previous prime is 55672319. The next prime is 55672361. The reversal of 55672331 is 13327655.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55672331 is a prime.

It is a super-2 number, since 2×55672331² = 6198816877947122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55672361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9020 + ... + 13881.

It is an arithmetic number, because the mean of its divisors is an integer number (4328478).

Almost surely, 2^55672331 is an apocalyptic number.

55672331 is a deficient number, since it is larger than the sum of its proper divisors (13583317).

55672331 is a wasteful number, since it uses less digits than its factorization.

55672331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22942.

The product of its digits is 18900, while the sum is 32.

The square root of 55672331 is about 7461.3893478360. The cubic root of 55672331 is about 381.8385761129.

Adding to 55672331 its reverse (13327655), we get a palindrome (68999986).

The spelling of 55672331 in words is "fifty-five million, six hundred seventy-two thousand, three hundred thirty-one".