56703581 has 16 divisors (see below), whose sum is σ = 65808960. Its totient is φ = 48314880.

The previous prime is 56703547. The next prime is 56703583. The reversal of 56703581 is 18530765.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56703581 is a prime.

It is a super-2 number, since 2×56703581² = 6430592196447122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56703583) 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, 18875 + ... + 21671.

It is an arithmetic number, because the mean of its divisors is an integer number (4113060).

Almost surely, 2^56703581 is an apocalyptic number.

It is an amenable number.

56703581 is a deficient number, since it is larger than the sum of its proper divisors (9105379).

56703581 is a wasteful number, since it uses less digits than its factorization.

56703581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 56703581 is about 7530.1780191440. The cubic root of 56703581 is about 384.1818370755.

The spelling of 56703581 in words is "fifty-six million, seven hundred three thousand, five hundred eighty-one".