55633657 has 2 divisors, whose sum is σ = 55633658. Its totient is φ = 55633656.

The previous prime is 55633649. The next prime is 55633723. The reversal of 55633657 is 75633655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36832761 + 18800896 = 6069^2 + 4336^2 .

It is a cyclic number.

It is not a de Polignac number, because 55633657 - 2³ = 55633649 is a prime.

It is not a weakly prime, because it can be changed into another prime (55633057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27816828 + 27816829.

It is an arithmetic number, because the mean of its divisors is an integer number (27816829).

Almost surely, 2^55633657 is an apocalyptic number.

It is an amenable number.

55633657 is a deficient number, since it is larger than the sum of its proper divisors (1).

55633657 is an equidigital number, since it uses as much as digits as its factorization.

55633657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 283500, while the sum is 40.

The square root of 55633657 is about 7458.7972891077. The cubic root of 55633657 is about 381.7501381306.

The spelling of 55633657 in words is "fifty-five million, six hundred thirty-three thousand, six hundred fifty-seven".