57681505 has 16 divisors (see below), whose sum is σ = 79297920. Its totient is φ = 39457152.

The previous prime is 57681499. The next prime is 57681509. The reversal of 57681505 is 50518675.

It is not a de Polignac number, because 57681505 - 2¹³ = 57673313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57681509) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 14581 + ... + 18109.

It is an arithmetic number, because the mean of its divisors is an integer number (4956120).

Almost surely, 2^57681505 is an apocalyptic number.

It is an amenable number.

57681505 is a deficient number, since it is larger than the sum of its proper divisors (21616415).

57681505 is a wasteful number, since it uses less digits than its factorization.

57681505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 57681505 is about 7594.8340995706. The cubic root of 57681505 is about 386.3778258897.

The spelling of 57681505 in words is "fifty-seven million, six hundred eighty-one thousand, five hundred five".