57447406 has 4 divisors (see below), whose sum is σ = 86171112. Its totient is φ = 28723702.

The previous prime is 57447391. The next prime is 57447407. The reversal of 57447406 is 60474475.

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

It is a super-2 number, since 2×57447406² = 6600408912257672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57447407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14361850 + ... + 14361853.

It is an arithmetic number, because the mean of its divisors is an integer number (21542778).

Almost surely, 2^57447406 is an apocalyptic number.

57447406 is a deficient number, since it is larger than the sum of its proper divisors (28723706).

57447406 is a wasteful number, since it uses less digits than its factorization.

57447406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28723705.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 57447406 is about 7579.4067050133. The cubic root of 57447406 is about 385.8544154640.

The spelling of 57447406 in words is "fifty-seven million, four hundred forty-seven thousand, four hundred six".