102050555 has 4 divisors (see below), whose sum is σ = 122460672. Its totient is φ = 81640440.

The previous prime is 102050549. The next prime is 102050573. The reversal of 102050555 is 555050201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555050201 = 1427 ⋅388963.

It is not a de Polignac number, because 102050555 - 2⁶ = 102050491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102050555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10205051 + ... + 10205060.

It is an arithmetic number, because the mean of its divisors is an integer number (30615168).

Almost surely, 2^102050555 is an apocalyptic number.

102050555 is a deficient number, since it is larger than the sum of its proper divisors (20410117).

102050555 is an equidigital number, since it uses as much as digits as its factorization.

102050555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20410116.

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

The square root of 102050555 is about 10102.0074737648. The cubic root of 102050555 is about 467.3100527587.

The spelling of 102050555 in words is "one hundred two million, fifty thousand, five hundred fifty-five".