57278373 has 4 divisors (see below), whose sum is σ = 76371168. Its totient is φ = 38185580.

The previous prime is 57278339. The next prime is 57278399. The reversal of 57278373 is 37387275.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57278373 - 2¹² = 57274277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57278323) 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, 9546393 + ... + 9546398.

It is an arithmetic number, because the mean of its divisors is an integer number (19092792).

Almost surely, 2^57278373 is an apocalyptic number.

It is an amenable number.

57278373 is a deficient number, since it is larger than the sum of its proper divisors (19092795).

57278373 is a wasteful number, since it uses less digits than its factorization.

57278373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092794.

The product of its digits is 246960, while the sum is 42.

The square root of 57278373 is about 7568.2476835791. The cubic root of 57278373 is about 385.4755982206.

The spelling of 57278373 in words is "fifty-seven million, two hundred seventy-eight thousand, three hundred seventy-three".