55073279 has 4 divisors (see below), whose sum is σ = 56561784. Its totient is φ = 53584776.

The previous prime is 55073269. The next prime is 55073303. The reversal of 55073279 is 97237055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55073279 - 2⁸ = 55073023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55073219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744197 + ... + 744270.

It is an arithmetic number, because the mean of its divisors is an integer number (14140446).

Almost surely, 2^55073279 is an apocalyptic number.

55073279 is a deficient number, since it is larger than the sum of its proper divisors (1488505).

55073279 is a wasteful number, since it uses less digits than its factorization.

55073279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488504.

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 55073279 is about 7421.1373117602. The cubic root of 55073279 is about 380.4640660037.

The spelling of 55073279 in words is "fifty-five million, seventy-three thousand, two hundred seventy-nine".