102556227 has 4 divisors (see below), whose sum is σ = 136741640. Its totient is φ = 68370816.

The previous prime is 102556199. The next prime is 102556283. The reversal of 102556227 is 722655201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722655201 = 3 ⋅240885067.

It is not a de Polignac number, because 102556227 - 2⁷ = 102556099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102556194 and 102556203.

It is not an unprimeable number, because it can be changed into a prime (102556127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17092702 + ... + 17092707.

It is an arithmetic number, because the mean of its divisors is an integer number (34185410).

Almost surely, 2^102556227 is an apocalyptic number.

102556227 is a deficient number, since it is larger than the sum of its proper divisors (34185413).

102556227 is an equidigital number, since it uses as much as digits as its factorization.

102556227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34185412.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 102556227 is about 10127.0048385493. The cubic root of 102556227 is about 468.0806393663.

The spelling of 102556227 in words is "one hundred two million, five hundred fifty-six thousand, two hundred twenty-seven".