57690533 has 2 divisors, whose sum is σ = 57690534. Its totient is φ = 57690532.

The previous prime is 57690527. The next prime is 57690559. The reversal of 57690533 is 33509675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48678529 + 9012004 = 6977^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 57690533 - 2⁸ = 57690277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57690583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28845266 + 28845267.

It is an arithmetic number, because the mean of its divisors is an integer number (28845267).

Almost surely, 2^57690533 is an apocalyptic number.

It is an amenable number.

57690533 is a deficient number, since it is larger than the sum of its proper divisors (1).

57690533 is an equidigital number, since it uses as much as digits as its factorization.

57690533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 38.

The square root of 57690533 is about 7595.4284276794. The cubic root of 57690533 is about 386.3979827669.

The spelling of 57690533 in words is "fifty-seven million, six hundred ninety thousand, five hundred thirty-three".