102579493 has 2 divisors, whose sum is σ = 102579494. Its totient is φ = 102579492.

The previous prime is 102579487. The next prime is 102579523. The reversal of 102579493 is 394975201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102454884 + 124609 = 10122^2 + 353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102579493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102579413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51289746 + 51289747.

It is an arithmetic number, because the mean of its divisors is an integer number (51289747).

Almost surely, 2^102579493 is an apocalyptic number.

It is an amenable number.

102579493 is a deficient number, since it is larger than the sum of its proper divisors (1).

102579493 is an equidigital number, since it uses as much as digits as its factorization.

102579493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 102579493 is about 10128.1534842241. The cubic root of 102579493 is about 468.1160330914.

The spelling of 102579493 in words is "one hundred two million, five hundred seventy-nine thousand, four hundred ninety-three".