55912447 has 2 divisors, whose sum is σ = 55912448. Its totient is φ = 55912446.

The previous prime is 55912393. The next prime is 55912463. The reversal of 55912447 is 74421955.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55912447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55912477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27956223 + 27956224.

It is an arithmetic number, because the mean of its divisors is an integer number (27956224).

Almost surely, 2^55912447 is an apocalyptic number.

55912447 is a deficient number, since it is larger than the sum of its proper divisors (1).

55912447 is an equidigital number, since it uses as much as digits as its factorization.

55912447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 55912447 is about 7477.4626043866. The cubic root of 55912447 is about 382.3867481935.

The spelling of 55912447 in words is "fifty-five million, nine hundred twelve thousand, four hundred forty-seven".