57427973 has 2 divisors, whose sum is σ = 57427974. Its totient is φ = 57427972.

The previous prime is 57427969. The next prime is 57428009. The reversal of 57427973 is 37972475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34550884 + 22877089 = 5878^2 + 4783^2 .

It is a cyclic number.

It is not a de Polignac number, because 57427973 - 2² = 57427969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57427913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28713986 + 28713987.

It is an arithmetic number, because the mean of its divisors is an integer number (28713987).

Almost surely, 2^57427973 is an apocalyptic number.

It is an amenable number.

57427973 is a deficient number, since it is larger than the sum of its proper divisors (1).

57427973 is an equidigital number, since it uses as much as digits as its factorization.

57427973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 44.

The square root of 57427973 is about 7578.1246360825. The cubic root of 57427973 is about 385.8109023040.

The spelling of 57427973 in words is "fifty-seven million, four hundred twenty-seven thousand, nine hundred seventy-three".