56657611 has 4 divisors (see below), whose sum is σ = 56907432. Its totient is φ = 56407792.

The previous prime is 56657609. The next prime is 56657633. The reversal of 56657611 is 11675665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11675665 = 5 ⋅2335133.

It is a cyclic number.

It is not a de Polignac number, because 56657611 - 2¹ = 56657609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56657681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124570 + ... + 125023.

It is an arithmetic number, because the mean of its divisors is an integer number (14226858).

Almost surely, 2^56657611 is an apocalyptic number.

56657611 is a deficient number, since it is larger than the sum of its proper divisors (249821).

56657611 is a wasteful number, since it uses less digits than its factorization.

56657611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249820.

The product of its digits is 37800, while the sum is 37.

The square root of 56657611 is about 7527.1250155687. The cubic root of 56657611 is about 384.0779893498.

The spelling of 56657611 in words is "fifty-six million, six hundred fifty-seven thousand, six hundred eleven".