56672121 has 8 divisors (see below), whose sum is σ = 82432224. Its totient is φ = 34346720.

The previous prime is 56672089. The next prime is 56672131. The reversal of 56672121 is 12127665.

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 56672121 - 2⁵ = 56672089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56672131) 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, 858636 + ... + 858701.

It is an arithmetic number, because the mean of its divisors is an integer number (10304028).

Almost surely, 2^56672121 is an apocalyptic number.

It is an amenable number.

56672121 is a deficient number, since it is larger than the sum of its proper divisors (25760103).

56672121 is a wasteful number, since it uses less digits than its factorization.

56672121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717351.

The product of its digits is 5040, while the sum is 30.

The square root of 56672121 is about 7528.0888012828. The cubic root of 56672121 is about 384.1107739769.

Adding to 56672121 its reverse (12127665), we get a palindrome (68799786).

The spelling of 56672121 in words is "fifty-six million, six hundred seventy-two thousand, one hundred twenty-one".