55662487 has 2 divisors, whose sum is σ = 55662488. Its totient is φ = 55662486.

The previous prime is 55662473. The next prime is 55662491. The reversal of 55662487 is 78426655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55662487 - 2¹¹ = 55660439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55662407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27831243 + 27831244.

It is an arithmetic number, because the mean of its divisors is an integer number (27831244).

Almost surely, 2^55662487 is an apocalyptic number.

55662487 is a deficient number, since it is larger than the sum of its proper divisors (1).

55662487 is an equidigital number, since it uses as much as digits as its factorization.

55662487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 43.

The square root of 55662487 is about 7460.7296560055. The cubic root of 55662487 is about 381.8160691785.

The spelling of 55662487 in words is "fifty-five million, six hundred sixty-two thousand, four hundred eighty-seven".