55653893 has 2 divisors, whose sum is σ = 55653894. Its totient is φ = 55653892.

The previous prime is 55653877. The next prime is 55653967. The reversal of 55653893 is 39835655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52388644 + 3265249 = 7238^2 + 1807^2 .

It is a cyclic number.

It is not a de Polignac number, because 55653893 - 2⁴ = 55653877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55653823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27826946 + 27826947.

It is an arithmetic number, because the mean of its divisors is an integer number (27826947).

Almost surely, 2^55653893 is an apocalyptic number.

It is an amenable number.

55653893 is a deficient number, since it is larger than the sum of its proper divisors (1).

55653893 is an equidigital number, since it uses as much as digits as its factorization.

55653893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486000, while the sum is 44.

The square root of 55653893 is about 7460.1536847440. The cubic root of 55653893 is about 381.7964180253.

The spelling of 55653893 in words is "fifty-five million, six hundred fifty-three thousand, eight hundred ninety-three".