57417991 has 2 divisors, whose sum is σ = 57417992. Its totient is φ = 57417990.

The previous prime is 57417967. The next prime is 57418003. The reversal of 57417991 is 19971475.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57417991 - 2²⁵ = 23863559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57417091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28708995 + 28708996.

It is an arithmetic number, because the mean of its divisors is an integer number (28708996).

Almost surely, 2^57417991 is an apocalyptic number.

57417991 is a deficient number, since it is larger than the sum of its proper divisors (1).

57417991 is an equidigital number, since it uses as much as digits as its factorization.

57417991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 43.

The square root of 57417991 is about 7577.4660012434. The cubic root of 57417991 is about 385.7885474168.

The spelling of 57417991 in words is "fifty-seven million, four hundred seventeen thousand, nine hundred ninety-one".