55974257 has 2 divisors, whose sum is σ = 55974258. Its totient is φ = 55974256.

The previous prime is 55974239. The next prime is 55974277. The reversal of 55974257 is 75247955.

55974257 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 can be written as a sum of positive squares in only one way, i.e., 33686416 + 22287841 = 5804^2 + 4721^2 .

It is a cyclic number.

It is not a de Polignac number, because 55974257 - 2⁸ = 55974001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55974277) 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, 27987128 + 27987129.

It is an arithmetic number, because the mean of its divisors is an integer number (27987129).

Almost surely, 2^55974257 is an apocalyptic number.

It is an amenable number.

55974257 is a deficient number, since it is larger than the sum of its proper divisors (1).

55974257 is an equidigital number, since it uses as much as digits as its factorization.

55974257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441000, while the sum is 44.

The square root of 55974257 is about 7481.5945492923. The cubic root of 55974257 is about 382.5276030602.

The spelling of 55974257 in words is "fifty-five million, nine hundred seventy-four thousand, two hundred fifty-seven".