55653967 has 2 divisors, whose sum is σ = 55653968. Its totient is φ = 55653966.

The previous prime is 55653893. The next prime is 55653973. The reversal of 55653967 is 76935655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55653967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55353967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27826983 + 27826984.

It is an arithmetic number, because the mean of its divisors is an integer number (27826984).

Almost surely, 2^55653967 is an apocalyptic number.

55653967 is a deficient number, since it is larger than the sum of its proper divisors (1).

55653967 is an equidigital number, since it uses as much as digits as its factorization.

55653967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 850500, while the sum is 46.

The square root of 55653967 is about 7460.1586444257. The cubic root of 55653967 is about 381.7965872433.

The spelling of 55653967 in words is "fifty-five million, six hundred fifty-three thousand, nine hundred sixty-seven".