57972989 has 2 divisors, whose sum is σ = 57972990. Its totient is φ = 57972988.

The previous prime is 57972979. The next prime is 57973031. The reversal of 57972989 is 98927975.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29702500 + 28270489 = 5450^2 + 5317^2 .

It is a cyclic number.

It is not a de Polignac number, because 57972989 - 2¹² = 57968893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57972919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28986494 + 28986495.

It is an arithmetic number, because the mean of its divisors is an integer number (28986495).

Almost surely, 2^57972989 is an apocalyptic number.

It is an amenable number.

57972989 is a deficient number, since it is larger than the sum of its proper divisors (1).

57972989 is an equidigital number, since it uses as much as digits as its factorization.

57972989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 56.

The square root of 57972989 is about 7613.9995403204. Note that the first 3 decimals coincide. The cubic root of 57972989 is about 387.0275649340.

The spelling of 57972989 in words is "fifty-seven million, nine hundred seventy-two thousand, nine hundred eighty-nine".