57445642 has 8 divisors (see below), whose sum is σ = 86788800. Its totient is φ = 28516044.

The previous prime is 57445637. The next prime is 57445649. The reversal of 57445642 is 24654475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (57445649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103042 + ... + 103597.

It is an arithmetic number, because the mean of its divisors is an integer number (10848600).

Almost surely, 2^57445642 is an apocalyptic number.

57445642 is a deficient number, since it is larger than the sum of its proper divisors (29343158).

57445642 is a wasteful number, since it uses less digits than its factorization.

57445642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206780.

The product of its digits is 134400, while the sum is 37.

The square root of 57445642 is about 7579.2903361726. The cubic root of 57445642 is about 385.8504660304.

The spelling of 57445642 in words is "fifty-seven million, four hundred forty-five thousand, six hundred forty-two".