57078723 has 8 divisors (see below), whose sum is σ = 81959248. Its totient is φ = 35125344.

The previous prime is 57078691. The next prime is 57078733. The reversal of 57078723 is 32787075.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57078723 - 2⁵ = 57078691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1463557 = 57078723 / (5 + 7 + 0 + 7 + 8 + 7 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57078733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731740 + ... + 731817.

It is an arithmetic number, because the mean of its divisors is an integer number (10244906).

Almost surely, 2^57078723 is an apocalyptic number.

57078723 is a deficient number, since it is larger than the sum of its proper divisors (24880525).

57078723 is a wasteful number, since it uses less digits than its factorization.

57078723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463573.

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 57078723 is about 7555.0461944319. The cubic root of 57078723 is about 385.0272044643.

The spelling of 57078723 in words is "fifty-seven million, seventy-eight thousand, seven hundred twenty-three".