55653623 has 2 divisors, whose sum is σ = 55653624. Its totient is φ = 55653622.

The previous prime is 55653613. The next prime is 55653707. The reversal of 55653623 is 32635655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55653623 - 2¹² = 55649527 is a prime.

It is a super-2 number, since 2×55653623² = 6194651506052258, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_3318866 and since 55653623 and 3318866 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55653613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27826811 + 27826812.

It is an arithmetic number, because the mean of its divisors is an integer number (27826812).

Almost surely, 2^55653623 is an apocalyptic number.

55653623 is a deficient number, since it is larger than the sum of its proper divisors (1).

55653623 is an equidigital number, since it uses as much as digits as its factorization.

55653623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 35.

The square root of 55653623 is about 7460.1355885801. The cubic root of 55653623 is about 381.7958006069.

The spelling of 55653623 in words is "fifty-five million, six hundred fifty-three thousand, six hundred twenty-three".