57138470 has 8 divisors (see below), whose sum is σ = 102849264. Its totient is φ = 22855384.

The previous prime is 57138413. The next prime is 57138539. The reversal of 57138470 is 7483175.

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

It is a self number, because there is not a number n which added to its sum of digits gives 57138470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856914 + ... + 2856933.

It is an arithmetic number, because the mean of its divisors is an integer number (12856158).

Almost surely, 2^57138470 is an apocalyptic number.

57138470 is a deficient number, since it is larger than the sum of its proper divisors (45710794).

57138470 is a wasteful number, since it uses less digits than its factorization.

57138470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713854.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 57138470 is about 7558.9992723905. Note that the first 3 decimals coincide. The cubic root of 57138470 is about 385.1614996816.

The spelling of 57138470 in words is "fifty-seven million, one hundred thirty-eight thousand, four hundred seventy".