57131449 has 2 divisors, whose sum is σ = 57131450. Its totient is φ = 57131448.

The previous prime is 57131443. The next prime is 57131467. The reversal of 57131449 is 94413175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 15657849 = 6440^2 + 3957^2 .

It is a cyclic number.

It is not a de Polignac number, because 57131449 - 2¹³ = 57123257 is a prime.

It is not a weakly prime, because it can be changed into another prime (57131443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28565724 + 28565725.

It is an arithmetic number, because the mean of its divisors is an integer number (28565725).

Almost surely, 2^57131449 is an apocalyptic number.

It is an amenable number.

57131449 is a deficient number, since it is larger than the sum of its proper divisors (1).

57131449 is an equidigital number, since it uses as much as digits as its factorization.

57131449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 57131449 is about 7558.5348447963. The cubic root of 57131449 is about 385.1457232140.

The spelling of 57131449 in words is "fifty-seven million, one hundred thirty-one thousand, four hundred forty-nine".