57420733 has 2 divisors, whose sum is σ = 57420734. Its totient is φ = 57420732.

The previous prime is 57420731. The next prime is 57420743. The reversal of 57420733 is 33702475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45400644 + 12020089 = 6738^2 + 3467^2 .

It is a cyclic number.

It is not a de Polignac number, because 57420733 - 2¹ = 57420731 is a prime.

Together with 57420731, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 57420695 and 57420704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57420731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28710366 + 28710367.

It is an arithmetic number, because the mean of its divisors is an integer number (28710367).

Almost surely, 2^57420733 is an apocalyptic number.

It is an amenable number.

57420733 is a deficient number, since it is larger than the sum of its proper divisors (1).

57420733 is an equidigital number, since it uses as much as digits as its factorization.

57420733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 57420733 is about 7577.6469302812. The cubic root of 57420733 is about 385.7946884383.

The spelling of 57420733 in words is "fifty-seven million, four hundred twenty thousand, seven hundred thirty-three".