55468639 has 2 divisors, whose sum is σ = 55468640. Its totient is φ = 55468638.

The previous prime is 55468597. The next prime is 55468669. The reversal of 55468639 is 93686455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55468639 - 2¹⁵ = 55435871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55468669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27734319 + 27734320.

It is an arithmetic number, because the mean of its divisors is an integer number (27734320).

Almost surely, 2^55468639 is an apocalyptic number.

55468639 is a deficient number, since it is larger than the sum of its proper divisors (1).

55468639 is an equidigital number, since it uses as much as digits as its factorization.

55468639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 46.

The square root of 55468639 is about 7447.7271029489. The cubic root of 55468639 is about 381.3723210833.

The spelling of 55468639 in words is "fifty-five million, four hundred sixty-eight thousand, six hundred thirty-nine".