57302878 has 4 divisors (see below), whose sum is σ = 85954320. Its totient is φ = 28651438.

The previous prime is 57302873. The next prime is 57302881. The reversal of 57302878 is 87820375.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 57302878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57302873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14325718 + ... + 14325721.

It is an arithmetic number, because the mean of its divisors is an integer number (21488580).

Almost surely, 2^57302878 is an apocalyptic number.

57302878 is a deficient number, since it is larger than the sum of its proper divisors (28651442).

57302878 is a wasteful number, since it uses less digits than its factorization.

57302878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28651441.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 57302878 is about 7569.8664453212. The cubic root of 57302878 is about 385.5305621466.

The spelling of 57302878 in words is "fifty-seven million, three hundred two thousand, eight hundred seventy-eight".