57498821 has 2 divisors, whose sum is σ = 57498822. Its totient is φ = 57498820.

The previous prime is 57498817. The next prime is 57498871. The reversal of 57498821 is 12889475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50268100 + 7230721 = 7090^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 57498821 - 2² = 57498817 is a prime.

It is a super-2 number, since 2×57498821² = 6612228832780082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57498871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28749410 + 28749411.

It is an arithmetic number, because the mean of its divisors is an integer number (28749411).

Almost surely, 2^57498821 is an apocalyptic number.

It is an amenable number.

57498821 is a deficient number, since it is larger than the sum of its proper divisors (1).

57498821 is an equidigital number, since it uses as much as digits as its factorization.

57498821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 44.

The square root of 57498821 is about 7582.7977026952. The cubic root of 57498821 is about 385.9694934144.

The spelling of 57498821 in words is "fifty-seven million, four hundred ninety-eight thousand, eight hundred twenty-one".