56157247 has 8 divisors (see below), whose sum is σ = 56712960. Its totient is φ = 55604640.

The previous prime is 56157223. The next prime is 56157281. The reversal of 56157247 is 74275165.

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 56157247 - 2⁷ = 56157119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56157287) 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, 50833 + ... + 51925.

It is an arithmetic number, because the mean of its divisors is an integer number (7089120).

Almost surely, 2^56157247 is an apocalyptic number.

56157247 is a deficient number, since it is larger than the sum of its proper divisors (555713).

56157247 is a wasteful number, since it uses less digits than its factorization.

56157247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553.

The product of its digits is 58800, while the sum is 37.

The square root of 56157247 is about 7493.8139154906. The cubic root of 56157247 is about 382.9440003385.

The spelling of 56157247 in words is "fifty-six million, one hundred fifty-seven thousand, two hundred forty-seven".