553215979 has 2 divisors, whose sum is σ = 553215980. Its totient is φ = 553215978.

The previous prime is 553215959. The next prime is 553215983. The reversal of 553215979 is 979512355.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553215979 is a prime.

It is not a weakly prime, because it can be changed into another prime (553215959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276607989 + 276607990.

It is an arithmetic number, because the mean of its divisors is an integer number (276607990).

Almost surely, 2^553215979 is an apocalyptic number.

553215979 is a deficient number, since it is larger than the sum of its proper divisors (1).

553215979 is an equidigital number, since it uses as much as digits as its factorization.

553215979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 46.

The square root of 553215979 is about 23520.5437649728. The cubic root of 553215979 is about 820.9150893605.

The spelling of 553215979 in words is "five hundred fifty-three million, two hundred fifteen thousand, nine hundred seventy-nine".