57190729 has 2 divisors, whose sum is σ = 57190730. Its totient is φ = 57190728.

The previous prime is 57190717. The next prime is 57190739. The reversal of 57190729 is 92709175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29680704 + 27510025 = 5448^2 + 5245^2 .

It is a cyclic number.

It is not a de Polignac number, because 57190729 - 2¹³ = 57182537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57190691 and 57190700.

It is not a weakly prime, because it can be changed into another prime (57190739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28595364 + 28595365.

It is an arithmetic number, because the mean of its divisors is an integer number (28595365).

Almost surely, 2^57190729 is an apocalyptic number.

It is an amenable number.

57190729 is a deficient number, since it is larger than the sum of its proper divisors (1).

57190729 is an equidigital number, since it uses as much as digits as its factorization.

57190729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 57190729 is about 7562.4552230079. The cubic root of 57190729 is about 385.2788871528.

The spelling of 57190729 in words is "fifty-seven million, one hundred ninety thousand, seven hundred twenty-nine".