57541321 has 2 divisors, whose sum is σ = 57541322. Its totient is φ = 57541320.

The previous prime is 57541303. The next prime is 57541333. The reversal of 57541321 is 12314575.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50055625 + 7485696 = 7075^2 + 2736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57541321 is a prime.

It is a super-2 number, since 2×57541321² = 6622007244850082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57541321.

It is not a weakly prime, because it can be changed into another prime (57541381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28770660 + 28770661.

It is an arithmetic number, because the mean of its divisors is an integer number (28770661).

Almost surely, 2^57541321 is an apocalyptic number.

It is an amenable number.

57541321 is a deficient number, since it is larger than the sum of its proper divisors (1).

57541321 is an equidigital number, since it uses as much as digits as its factorization.

57541321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 28.

The square root of 57541321 is about 7585.5995807846. The cubic root of 57541321 is about 386.0645658772.

Adding to 57541321 its reverse (12314575), we get a palindrome (69855896).

The spelling of 57541321 in words is "fifty-seven million, five hundred forty-one thousand, three hundred twenty-one".