56157005 has 8 divisors (see below), whose sum is σ = 67581432. Its totient is φ = 44796928.

The previous prime is 56156999. The next prime is 56157029. The reversal of 56157005 is 50075165.

It can be written as a sum of positive squares in 4 ways, for example, as 13097161 + 43059844 = 3619^2 + 6562^2 .

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 56157005 - 2¹² = 56152909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14144 + ... + 17673.

It is an arithmetic number, because the mean of its divisors is an integer number (8447679).

Almost surely, 2^56157005 is an apocalyptic number.

It is an amenable number.

56157005 is a deficient number, since it is larger than the sum of its proper divisors (11424427).

56157005 is a wasteful number, since it uses less digits than its factorization.

56157005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32175.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 56157005 is about 7493.7977688219. The cubic root of 56157005 is about 382.9434502606.

The spelling of 56157005 in words is "fifty-six million, one hundred fifty-seven thousand, five".