57711449 has 2 divisors, whose sum is σ = 57711450. Its totient is φ = 57711448.

The previous prime is 57711419. The next prime is 57711457. The reversal of 57711449 is 94411775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47265625 + 10445824 = 6875^2 + 3232^2 .

It is a cyclic number.

It is not a de Polignac number, because 57711449 - 2⁸ = 57711193 is a prime.

It is a super-2 number, since 2×57711449² = 6661222691359202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57711419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28855724 + 28855725.

It is an arithmetic number, because the mean of its divisors is an integer number (28855725).

Almost surely, 2^57711449 is an apocalyptic number.

It is an amenable number.

57711449 is a deficient number, since it is larger than the sum of its proper divisors (1).

57711449 is an equidigital number, since it uses as much as digits as its factorization.

57711449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 57711449 is about 7596.8051837598. The cubic root of 57711449 is about 386.4446739845. Note that the first 3 decimals are identical.

The spelling of 57711449 in words is "fifty-seven million, seven hundred eleven thousand, four hundred forty-nine".