57490729 has 4 divisors (see below), whose sum is σ = 58713984. Its totient is φ = 56267476.

The previous prime is 57490723. The next prime is 57490739. The reversal of 57490729 is 92709475.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57490729 - 2²¹ = 55393577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57490723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611557 + ... + 611650.

It is an arithmetic number, because the mean of its divisors is an integer number (14678496).

Almost surely, 2^57490729 is an apocalyptic number.

It is an amenable number.

57490729 is a deficient number, since it is larger than the sum of its proper divisors (1223255).

57490729 is a wasteful number, since it uses less digits than its factorization.

57490729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223254.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 57490729 is about 7582.2641077715. The cubic root of 57490729 is about 385.9513863089.

The spelling of 57490729 in words is "fifty-seven million, four hundred ninety thousand, seven hundred twenty-nine".