57706442 has 4 divisors (see below), whose sum is σ = 86559666. Its totient is φ = 28853220.

The previous prime is 57706403. The next prime is 57706463. The reversal of 57706442 is 24460775.

57706442 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., 53860921 + 3845521 = 7339^2 + 1961^2 .

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, 14426609 + ... + 14426612.

Almost surely, 2^57706442 is an apocalyptic number.

57706442 is a deficient number, since it is larger than the sum of its proper divisors (28853224).

57706442 is a wasteful number, since it uses less digits than its factorization.

57706442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28853223.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 57706442 is about 7596.4756301854. The cubic root of 57706442 is about 386.4334977825.

The spelling of 57706442 in words is "fifty-seven million, seven hundred six thousand, four hundred forty-two".