57062191 has 2 divisors, whose sum is σ = 57062192. Its totient is φ = 57062190.

The previous prime is 57062171. The next prime is 57062197. The reversal of 57062191 is 19126075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57062191 - 2⁹ = 57061679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57062197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28531095 + 28531096.

It is an arithmetic number, because the mean of its divisors is an integer number (28531096).

Almost surely, 2^57062191 is an apocalyptic number.

57062191 is a deficient number, since it is larger than the sum of its proper divisors (1).

57062191 is an equidigital number, since it uses as much as digits as its factorization.

57062191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 57062191 is about 7553.9520120266. The cubic root of 57062191 is about 384.9900284144.

The spelling of 57062191 in words is "fifty-seven million, sixty-two thousand, one hundred ninety-one".