57442543 has 2 divisors, whose sum is σ = 57442544. Its totient is φ = 57442542.

The previous prime is 57442531. The next prime is 57442571. The reversal of 57442543 is 34524475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57442543 - 2²¹ = 55345391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57442499 and 57442508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57443543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28721271 + 28721272.

It is an arithmetic number, because the mean of its divisors is an integer number (28721272).

Almost surely, 2^57442543 is an apocalyptic number.

57442543 is a deficient number, since it is larger than the sum of its proper divisors (1).

57442543 is an equidigital number, since it uses as much as digits as its factorization.

57442543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 34.

The square root of 57442543 is about 7579.0858947501. The cubic root of 57442543 is about 385.8435274588.

The spelling of 57442543 in words is "fifty-seven million, four hundred forty-two thousand, five hundred forty-three".