102857477 has 2 divisors, whose sum is σ = 102857478. Its totient is φ = 102857476.

The previous prime is 102857467. The next prime is 102857483. The reversal of 102857477 is 774758201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90649441 + 12208036 = 9521^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 102857477 - 2²⁰ = 101808901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102857437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51428738 + 51428739.

It is an arithmetic number, because the mean of its divisors is an integer number (51428739).

Almost surely, 2^102857477 is an apocalyptic number.

It is an amenable number.

102857477 is a deficient number, since it is larger than the sum of its proper divisors (1).

102857477 is an equidigital number, since it uses as much as digits as its factorization.

102857477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 102857477 is about 10141.8675301938. The cubic root of 102857477 is about 468.5385067368.

The spelling of 102857477 in words is "one hundred two million, eight hundred fifty-seven thousand, four hundred seventy-seven".