57090394 has 4 divisors (see below), whose sum is σ = 85635594. Its totient is φ = 28545196.

The previous prime is 57090389. The next prime is 57090401. The reversal of 57090394 is 49309075.

57090394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 38900169 + 18190225 = 6237^2 + 4265^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14272597 + ... + 14272600.

Almost surely, 2^57090394 is an apocalyptic number.

57090394 is a deficient number, since it is larger than the sum of its proper divisors (28545200).

57090394 is a wasteful number, since it uses less digits than its factorization.

57090394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28545199.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 57090394 is about 7555.8185526123. The cubic root of 57090394 is about 385.0534451020.

The spelling of 57090394 in words is "fifty-seven million, ninety thousand, three hundred ninety-four".