56172899 has 8 divisors (see below), whose sum is σ = 58073088. Its totient is φ = 54278280.

The previous prime is 56172889. The next prime is 56172917. The reversal of 56172899 is 99827165.

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 56172899 - 2¹² = 56168803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56172839) 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, 32864 + ... + 34530.

It is an arithmetic number, because the mean of its divisors is an integer number (7259136).

Almost surely, 2^56172899 is an apocalyptic number.

56172899 is a deficient number, since it is larger than the sum of its proper divisors (1900189).

56172899 is a wasteful number, since it uses less digits than its factorization.

56172899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785.

The product of its digits is 272160, while the sum is 47.

The square root of 56172899 is about 7494.8581707728. The cubic root of 56172899 is about 382.9795747481.

The spelling of 56172899 in words is "fifty-six million, one hundred seventy-two thousand, eight hundred ninety-nine".