55879877 has 2 divisors, whose sum is σ = 55879878. Its totient is φ = 55879876.

The previous prime is 55879853. The next prime is 55879883. The reversal of 55879877 is 77897855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43020481 + 12859396 = 6559^2 + 3586^2 .

It is a cyclic number.

It is not a de Polignac number, because 55879877 - 2¹⁸ = 55617733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55879777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27939938 + 27939939.

It is an arithmetic number, because the mean of its divisors is an integer number (27939939).

Almost surely, 2^55879877 is an apocalyptic number.

It is an amenable number.

55879877 is a deficient number, since it is larger than the sum of its proper divisors (1).

55879877 is an equidigital number, since it uses as much as digits as its factorization.

55879877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4939200, while the sum is 56.

The square root of 55879877 is about 7475.2844093051. The cubic root of 55879877 is about 382.3124847326.

The spelling of 55879877 in words is "fifty-five million, eight hundred seventy-nine thousand, eight hundred seventy-seven".