55013279 has 2 divisors, whose sum is σ = 55013280. Its totient is φ = 55013278.

The previous prime is 55013243. The next prime is 55013317. The reversal of 55013279 is 97231055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55013279 - 2²⁴ = 38236063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55013239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27506639 + 27506640.

It is an arithmetic number, because the mean of its divisors is an integer number (27506640).

Almost surely, 2^55013279 is an apocalyptic number.

55013279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55013279 is an equidigital number, since it uses as much as digits as its factorization.

55013279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 55013279 is about 7417.0937030619. The cubic root of 55013279 is about 380.3258493138.

The spelling of 55013279 in words is "fifty-five million, thirteen thousand, two hundred seventy-nine".