57473989 has 2 divisors, whose sum is σ = 57473990. Its totient is φ = 57473988.

The previous prime is 57473959. The next prime is 57474041. The reversal of 57473989 is 98937475.

It is an a-pointer prime, because the next prime (57474041) can be obtained adding 57473989 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37822500 + 19651489 = 6150^2 + 4433^2 .

It is a cyclic number.

It is not a de Polignac number, because 57473989 - 2¹⁵ = 57441221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57473909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28736994 + 28736995.

It is an arithmetic number, because the mean of its divisors is an integer number (28736995).

Almost surely, 2^57473989 is an apocalyptic number.

It is an amenable number.

57473989 is a deficient number, since it is larger than the sum of its proper divisors (1).

57473989 is an equidigital number, since it uses as much as digits as its factorization.

57473989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 52.

The square root of 57473989 is about 7581.1601354938. The cubic root of 57473989 is about 385.9139225676.

The spelling of 57473989 in words is "fifty-seven million, four hundred seventy-three thousand, nine hundred eighty-nine".