102255511 has 4 divisors (see below), whose sum is σ = 107637400. Its totient is φ = 96873624.

The previous prime is 102255481. The next prime is 102255521. The reversal of 102255511 is 115552201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102255511 is a prime.

It is a super-2 number, since 2×102255511² = 20912379059742242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102255521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2690916 + ... + 2690953.

It is an arithmetic number, because the mean of its divisors is an integer number (26909350).

Almost surely, 2^102255511 is an apocalyptic number.

102255511 is a deficient number, since it is larger than the sum of its proper divisors (5381889).

102255511 is an equidigital number, since it uses as much as digits as its factorization.

102255511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381888.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 102255511 is about 10112.1467058187. The cubic root of 102255511 is about 467.6226884949.

The spelling of 102255511 in words is "one hundred two million, two hundred fifty-five thousand, five hundred eleven".