57040537 has 2 divisors, whose sum is σ = 57040538. Its totient is φ = 57040536.

The previous prime is 57040513. The next prime is 57040549. The reversal of 57040537 is 73504075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32478601 + 24561936 = 5699^2 + 4956^2 .

It is a cyclic number.

It is not a de Polignac number, because 57040537 - 2⁷ = 57040409 is a prime.

It is a super-2 number, since 2×57040537² = 6507245722496738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57040499 and 57040508.

It is not a weakly prime, because it can be changed into another prime (57043537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28520268 + 28520269.

It is an arithmetic number, because the mean of its divisors is an integer number (28520269).

Almost surely, 2^57040537 is an apocalyptic number.

It is an amenable number.

57040537 is a deficient number, since it is larger than the sum of its proper divisors (1).

57040537 is an equidigital number, since it uses as much as digits as its factorization.

57040537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 57040537 is about 7552.5185865379. The cubic root of 57040537 is about 384.9413234916.

The spelling of 57040537 in words is "fifty-seven million, forty thousand, five hundred thirty-seven".