57065989 has 4 divisors (see below), whose sum is σ = 57599424. Its totient is φ = 56532556.

The previous prime is 57065963. The next prime is 57065993. The reversal of 57065989 is 98956075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57065989 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 (57062989) 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 3 ways as a sum of consecutive naturals, for example, 266557 + ... + 266770.

It is an arithmetic number, because the mean of its divisors is an integer number (14399856).

Almost surely, 2^57065989 is an apocalyptic number.

It is an amenable number.

57065989 is a deficient number, since it is larger than the sum of its proper divisors (533435).

57065989 is a wasteful number, since it uses less digits than its factorization.

57065989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533434.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 57065989 is about 7554.2033994327. The cubic root of 57065989 is about 384.9985697366.

The spelling of 57065989 in words is "fifty-seven million, sixty-five thousand, nine hundred eighty-nine".