57047944 has 8 divisors (see below), whose sum is σ = 106964910. Its totient is φ = 28523968.

The previous prime is 57047941. The next prime is 57047957. The reversal of 57047944 is 44974075.

It can be written as a sum of positive squares in only one way, i.e., 30935844 + 26112100 = 5562^2 + 5110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 57047897 and 57047906.

It is not an unprimeable number, because it can be changed into a prime (57047941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3565489 + ... + 3565504.

Almost surely, 2^57047944 is an apocalyptic number.

It is an amenable number.

57047944 is a deficient number, since it is larger than the sum of its proper divisors (49916966).

57047944 is a wasteful number, since it uses less digits than its factorization.

57047944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130999 (or 7130995 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 57047944 is about 7553.0089368410. The cubic root of 57047944 is about 384.9579849580.

The spelling of 57047944 in words is "fifty-seven million, forty-seven thousand, nine hundred forty-four".