56636957 has 4 divisors (see below), whose sum is σ = 60993660. Its totient is φ = 52280256.

The previous prime is 56636953. The next prime is 56636963. The reversal of 56636957 is 75963665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5285401 + 51351556 = 2299^2 + 7166^2 .

It is a cyclic number.

It is not a de Polignac number, because 56636957 - 2² = 56636953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56636953) 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, 2178332 + ... + 2178357.

It is an arithmetic number, because the mean of its divisors is an integer number (15248415).

Almost surely, 2^56636957 is an apocalyptic number.

It is an amenable number.

56636957 is a deficient number, since it is larger than the sum of its proper divisors (4356703).

56636957 is a wasteful number, since it uses less digits than its factorization.

56636957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356702.

The product of its digits is 1020600, while the sum is 47.

The square root of 56636957 is about 7525.7529191437. The cubic root of 56636957 is about 384.0313130028.

The spelling of 56636957 in words is "fifty-six million, six hundred thirty-six thousand, nine hundred fifty-seven".