55231877 has 2 divisors, whose sum is σ = 55231878. Its totient is φ = 55231876.

The previous prime is 55231871. The next prime is 55231889. The reversal of 55231877 is 77813255.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31427236 + 23804641 = 5606^2 + 4879^2 .

It is a cyclic number.

It is not a de Polignac number, because 55231877 - 2⁸ = 55231621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55231877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55231871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27615938 + 27615939.

It is an arithmetic number, because the mean of its divisors is an integer number (27615939).

Almost surely, 2^55231877 is an apocalyptic number.

It is an amenable number.

55231877 is a deficient number, since it is larger than the sum of its proper divisors (1).

55231877 is an equidigital number, since it uses as much as digits as its factorization.

55231877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The square root of 55231877 is about 7431.8151887678. The cubic root of 55231877 is about 380.8289314525.

The spelling of 55231877 in words is "fifty-five million, two hundred thirty-one thousand, eight hundred seventy-seven".