57303989 has 4 divisors (see below), whose sum is σ = 57357324. Its totient is φ = 57250656.

The previous prime is 57303977. The next prime is 57303997. The reversal of 57303989 is 98930375.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19272100 + 38031889 = 4390^2 + 6167^2 .

It is a cyclic number.

It is not a de Polignac number, because 57303989 - 2⁴ = 57303973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57303919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25022 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (14339331).

Almost surely, 2^57303989 is an apocalyptic number.

It is an amenable number.

57303989 is a deficient number, since it is larger than the sum of its proper divisors (53335).

57303989 is a wasteful number, since it uses less digits than its factorization.

57303989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53334.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 57303989 is about 7569.9398280303. The cubic root of 57303989 is about 385.5330537125.

The spelling of 57303989 in words is "fifty-seven million, three hundred three thousand, nine hundred eighty-nine".