55653431 has 2 divisors, whose sum is σ = 55653432. Its totient is φ = 55653430.

The previous prime is 55653419. The next prime is 55653449. The reversal of 55653431 is 13435655.

55653431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55653431 is a prime.

It is a super-2 number, since 2×55653431² = 6194608764143522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55653131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27826715 + 27826716.

It is an arithmetic number, because the mean of its divisors is an integer number (27826716).

Almost surely, 2^55653431 is an apocalyptic number.

55653431 is a deficient number, since it is larger than the sum of its proper divisors (1).

55653431 is an equidigital number, since it uses as much as digits as its factorization.

55653431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 32.

The square root of 55653431 is about 7460.1227201702. The cubic root of 55653431 is about 381.7953615527.

The spelling of 55653431 in words is "fifty-five million, six hundred fifty-three thousand, four hundred thirty-one".