55657304537 has 2 divisors, whose sum is σ = 55657304538. Its totient is φ = 55657304536.

The previous prime is 55657304519. The next prime is 55657304567. The reversal of 55657304537 is 73540375655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47952678361 + 7704626176 = 218981^2 + 87776^2 .

It is a cyclic number.

It is not a de Polignac number, because 55657304537 - 2⁶ = 55657304473 is a prime.

It is not a weakly prime, because it can be changed into another prime (55657304567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27828652268 + 27828652269.

It is an arithmetic number, because the mean of its divisors is an integer number (27828652269).

Almost surely, 2^55657304537 is an apocalyptic number.

It is an amenable number.

55657304537 is a deficient number, since it is larger than the sum of its proper divisors (1).

55657304537 is an equidigital number, since it uses as much as digits as its factorization.

55657304537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6615000, while the sum is 50.

The spelling of 55657304537 in words is "fifty-five billion, six hundred fifty-seven million, three hundred four thousand, five hundred thirty-seven".