56206637 has 2 divisors, whose sum is σ = 56206638. Its totient is φ = 56206636.

The previous prime is 56206621. The next prime is 56206643. The reversal of 56206637 is 73660265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50282281 + 5924356 = 7091^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 56206637 - 2⁴ = 56206621 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56206597 and 56206606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56206697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28103318 + 28103319.

It is an arithmetic number, because the mean of its divisors is an integer number (28103319).

Almost surely, 2^56206637 is an apocalyptic number.

It is an amenable number.

56206637 is a deficient number, since it is larger than the sum of its proper divisors (1).

56206637 is an equidigital number, since it uses as much as digits as its factorization.

56206637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 56206637 is about 7497.1085759778. The cubic root of 56206637 is about 383.0562331792.

The spelling of 56206637 in words is "fifty-six million, two hundred six thousand, six hundred thirty-seven".