102550505 has 16 divisors (see below), whose sum is σ = 129790080. Its totient is φ = 77571072.

The previous prime is 102550489. The next prime is 102550507. The reversal of 102550505 is 505055201.

It is not a de Polignac number, because 102550505 - 2⁴ = 102550489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102550507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83657 + ... + 84873.

It is an arithmetic number, because the mean of its divisors is an integer number (8111880).

Almost surely, 2^102550505 is an apocalyptic number.

It is an amenable number.

102550505 is a deficient number, since it is larger than the sum of its proper divisors (27239575).

102550505 is a wasteful number, since it uses less digits than its factorization.

102550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 102550505 is about 10126.7223226471. The cubic root of 102550505 is about 468.0719338743.

The spelling of 102550505 in words is "one hundred two million, five hundred fifty thousand, five hundred five".