57138415 has 8 divisors (see below), whose sum is σ = 72174960. Its totient is φ = 43304832.

The previous prime is 57138413. The next prime is 57138539. The reversal of 57138415 is 51483175.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 57138415 - 2¹ = 57138413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57138413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300634 + ... + 300823.

It is an arithmetic number, because the mean of its divisors is an integer number (9021870).

Almost surely, 2^57138415 is an apocalyptic number.

57138415 is a deficient number, since it is larger than the sum of its proper divisors (15036545).

57138415 is a wasteful number, since it uses less digits than its factorization.

57138415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601481.

The product of its digits is 16800, while the sum is 34.

The square root of 57138415 is about 7558.9956343419. The cubic root of 57138415 is about 385.1613760994.

The spelling of 57138415 in words is "fifty-seven million, one hundred thirty-eight thousand, four hundred fifteen".