57442501 has 2 divisors, whose sum is σ = 57442502. Its totient is φ = 57442500.

The previous prime is 57442499. The next prime is 57442519. The reversal of 57442501 is 10524475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51825601 + 5616900 = 7199^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 57442501 - 2¹ = 57442499 is a prime.

It is a super-2 number, since 2×57442501² = 6599281842270002, which contains 22 as substring.

Together with 57442499, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 57442501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57442531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28721250 + 28721251.

It is an arithmetic number, because the mean of its divisors is an integer number (28721251).

Almost surely, 2^57442501 is an apocalyptic number.

It is an amenable number.

57442501 is a deficient number, since it is larger than the sum of its proper divisors (1).

57442501 is an equidigital number, since it uses as much as digits as its factorization.

57442501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 57442501 is about 7579.0831239669. The cubic root of 57442501 is about 385.8434334203.

Adding to 57442501 its reverse (10524475), we get a palindrome (67966976).

The spelling of 57442501 in words is "fifty-seven million, four hundred forty-two thousand, five hundred one".