57445039 has 2 divisors, whose sum is σ = 57445040. Its totient is φ = 57445038.

The previous prime is 57444997. The next prime is 57445067. The reversal of 57445039 is 93054475.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57445039 - 2¹⁷ = 57313967 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57444989 and 57445007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57445439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28722519 + 28722520.

It is an arithmetic number, because the mean of its divisors is an integer number (28722520).

Almost surely, 2^57445039 is an apocalyptic number.

57445039 is a deficient number, since it is larger than the sum of its proper divisors (1).

57445039 is an equidigital number, since it uses as much as digits as its factorization.

57445039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 57445039 is about 7579.2505566184. The cubic root of 57445039 is about 385.8491159503.

It can be divided in two parts, 57 and 445039, that added together give a triangular number (445096 = T₉₄₃).

The spelling of 57445039 in words is "fifty-seven million, four hundred forty-five thousand, thirty-nine".