57540989 has 8 divisors (see below), whose sum is σ = 63836640. Its totient is φ = 51422800.

The previous prime is 57540979. The next prime is 57541021. The reversal of 57540989 is 98904575.

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

It is not a de Polignac number, because 57540989 - 2²⁰ = 56492413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57540979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43682 + ... + 44979.

It is an arithmetic number, because the mean of its divisors is an integer number (7979580).

Almost surely, 2^57540989 is an apocalyptic number.

57540989 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

57540989 is a deficient number, since it is larger than the sum of its proper divisors (6295651).

57540989 is a wasteful number, since it uses less digits than its factorization.

57540989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88731.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 57540989 is about 7585.5776971830. The cubic root of 57540989 is about 386.0638233749.

The spelling of 57540989 in words is "fifty-seven million, five hundred forty thousand, nine hundred eighty-nine".