57149446 has 4 divisors (see below), whose sum is σ = 85724172. Its totient is φ = 28574722.

The previous prime is 57149431. The next prime is 57149453. The reversal of 57149446 is 64494175.

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 junction number, because it is equal to n+sod(n) for n = 57149399 and 57149408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14287360 + ... + 14287363.

It is an arithmetic number, because the mean of its divisors is an integer number (21431043).

Almost surely, 2^57149446 is an apocalyptic number.

57149446 is a deficient number, since it is larger than the sum of its proper divisors (28574726).

57149446 is a wasteful number, since it uses less digits than its factorization.

57149446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28574725.

The product of its digits is 120960, while the sum is 40.

The square root of 57149446 is about 7559.7252595580. The cubic root of 57149446 is about 385.1861606030.

The spelling of 57149446 in words is "fifty-seven million, one hundred forty-nine thousand, four hundred forty-six".