57082442 has 4 divisors (see below), whose sum is σ = 85623666. Its totient is φ = 28541220.

The previous prime is 57082433. The next prime is 57082471. The reversal of 57082442 is 24428075.

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., 46771921 + 10310521 = 6839^2 + 3211^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57082399 and 57082408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14270609 + ... + 14270612.

Almost surely, 2^57082442 is an apocalyptic number.

57082442 is a deficient number, since it is larger than the sum of its proper divisors (28541224).

57082442 is a wasteful number, since it uses less digits than its factorization.

57082442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28541223.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 57082442 is about 7555.2923173098. The cubic root of 57082442 is about 385.0355665124.

The spelling of 57082442 in words is "fifty-seven million, eighty-two thousand, four hundred forty-two".