55712551 has 2 divisors, whose sum is σ = 55712552. Its totient is φ = 55712550.

The previous prime is 55712543. The next prime is 55712561. The reversal of 55712551 is 15521755.

55712551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55712551 - 2³ = 55712543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55712561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27856275 + 27856276.

It is an arithmetic number, because the mean of its divisors is an integer number (27856276).

Almost surely, 2^55712551 is an apocalyptic number.

55712551 is a deficient number, since it is larger than the sum of its proper divisors (1).

55712551 is an equidigital number, since it uses as much as digits as its factorization.

55712551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8750, while the sum is 31.

The square root of 55712551 is about 7464.0840697302. The cubic root of 55712551 is about 381.9305059844.

The spelling of 55712551 in words is "fifty-five million, seven hundred twelve thousand, five hundred fifty-one".