55316939 has 2 divisors, whose sum is σ = 55316940. Its totient is φ = 55316938.

The previous prime is 55316903. The next prime is 55316951. The reversal of 55316939 is 93961355.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55316939 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55316896 and 55316905.

It is not a weakly prime, because it can be changed into another prime (55316969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27658469 + 27658470.

It is an arithmetic number, because the mean of its divisors is an integer number (27658470).

Almost surely, 2^55316939 is an apocalyptic number.

55316939 is a deficient number, since it is larger than the sum of its proper divisors (1).

55316939 is an equidigital number, since it uses as much as digits as its factorization.

55316939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109350, while the sum is 41.

The square root of 55316939 is about 7437.5358150398. The cubic root of 55316939 is about 381.0243346425.

The spelling of 55316939 in words is "fifty-five million, three hundred sixteen thousand, nine hundred thirty-nine".