55974277 has 2 divisors, whose sum is σ = 55974278. Its totient is φ = 55974276.

The previous prime is 55974257. The next prime is 55974293. The reversal of 55974277 is 77247955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29441476 + 26532801 = 5426^2 + 5151^2 .

It is a cyclic number.

It is not a de Polignac number, because 55974277 - 2¹¹ = 55972229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55974257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27987138 + 27987139.

It is an arithmetic number, because the mean of its divisors is an integer number (27987139).

Almost surely, 2^55974277 is an apocalyptic number.

It is an amenable number.

55974277 is a deficient number, since it is larger than the sum of its proper divisors (1).

55974277 is an equidigital number, since it uses as much as digits as its factorization.

55974277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617400, while the sum is 46.

The square root of 55974277 is about 7481.5958859056. The cubic root of 55974277 is about 382.5276486201.

It can be divided in two parts, 559742 and 77, that multiplied together give a palindrome (43100134).

The spelling of 55974277 in words is "fifty-five million, nine hundred seventy-four thousand, two hundred seventy-seven".