57279073 has 4 divisors (see below), whose sum is σ = 57327508. Its totient is φ = 57230640.

The previous prime is 57279067. The next prime is 57279077. The reversal of 57279073 is 37097275.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6185169 + 51093904 = 2487^2 + 7148^2 .

It is a cyclic number.

It is not a de Polignac number, because 57279073 - 2⁹ = 57278561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57279077) 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, 22398 + ... + 24823.

It is an arithmetic number, because the mean of its divisors is an integer number (14331877).

Almost surely, 2^57279073 is an apocalyptic number.

It is an amenable number.

57279073 is a deficient number, since it is larger than the sum of its proper divisors (48435).

57279073 is a wasteful number, since it uses less digits than its factorization.

57279073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48434.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 57279073 is about 7568.2939292816. The cubic root of 57279073 is about 385.4771685155.

The spelling of 57279073 in words is "fifty-seven million, two hundred seventy-nine thousand, seventy-three".