57149453 has 2 divisors, whose sum is σ = 57149454. Its totient is φ = 57149452.

The previous prime is 57149431. The next prime is 57149501. The reversal of 57149453 is 35494175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37982569 + 19166884 = 6163^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 57149453 - 2¹² = 57145357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57149353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28574726 + 28574727.

It is an arithmetic number, because the mean of its divisors is an integer number (28574727).

Almost surely, 2^57149453 is an apocalyptic number.

It is an amenable number.

57149453 is a deficient number, since it is larger than the sum of its proper divisors (1).

57149453 is an equidigital number, since it uses as much as digits as its factorization.

57149453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 57149453 is about 7559.7257225378. The cubic root of 57149453 is about 385.1861763296.

The spelling of 57149453 in words is "fifty-seven million, one hundred forty-nine thousand, four hundred fifty-three".