57671813 has 2 divisors, whose sum is σ = 57671814. Its totient is φ = 57671812.

The previous prime is 57671797. The next prime is 57671819. The reversal of 57671813 is 31817675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39413284 + 18258529 = 6278^2 + 4273^2 .

It is a cyclic number.

It is not a de Polignac number, because 57671813 - 2⁴ = 57671797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57671819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28835906 + 28835907.

It is an arithmetic number, because the mean of its divisors is an integer number (28835907).

Almost surely, 2^57671813 is an apocalyptic number.

It is an amenable number.

57671813 is a deficient number, since it is larger than the sum of its proper divisors (1).

57671813 is an equidigital number, since it uses as much as digits as its factorization.

57671813 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 57671813 is about 7594.1960074783. The cubic root of 57671813 is about 386.3561841540.

The spelling of 57671813 in words is "fifty-seven million, six hundred seventy-one thousand, eight hundred thirteen".