55336979 has 2 divisors, whose sum is σ = 55336980. Its totient is φ = 55336978.

The previous prime is 55336933. The next prime is 55336997. The reversal of 55336979 is 97963355.

Together with next prime (55336997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55336979 is a prime.

It is not a weakly prime, because it can be changed into another prime (55336909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27668489 + 27668490.

It is an arithmetic number, because the mean of its divisors is an integer number (27668490).

Almost surely, 2^55336979 is an apocalyptic number.

55336979 is a deficient number, since it is larger than the sum of its proper divisors (1).

55336979 is an equidigital number, since it uses as much as digits as its factorization.

55336979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 765450, while the sum is 47.

The square root of 55336979 is about 7438.8829134488. The cubic root of 55336979 is about 381.0703410793.

The spelling of 55336979 in words is "fifty-five million, three hundred thirty-six thousand, nine hundred seventy-nine".