102679557 has 4 divisors (see below), whose sum is σ = 136906080. Its totient is φ = 68453036.

The previous prime is 102679523. The next prime is 102679573. The reversal of 102679557 is 755976201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102679557 - 2⁸ = 102679301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102679957) 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 in 3 ways as a sum of consecutive naturals, for example, 17113257 + ... + 17113262.

It is an arithmetic number, because the mean of its divisors is an integer number (34226520).

Almost surely, 2^102679557 is an apocalyptic number.

It is an amenable number.

102679557 is a deficient number, since it is larger than the sum of its proper divisors (34226523).

102679557 is an equidigital number, since it uses as much as digits as its factorization.

102679557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34226522.

The product of its (nonzero) digits is 132300, while the sum is 42.

The square root of 102679557 is about 10133.0921736655. The cubic root of 102679557 is about 468.2681958634.

The spelling of 102679557 in words is "one hundred two million, six hundred seventy-nine thousand, five hundred fifty-seven".