102052551 has 4 divisors (see below), whose sum is σ = 136070072. Its totient is φ = 68035032.

The previous prime is 102052529. The next prime is 102052583. The reversal of 102052551 is 155250201.

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

It is not a de Polignac number, because 102052551 - 2⁵ = 102052519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102052151) 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, 17008756 + ... + 17008761.

It is an arithmetic number, because the mean of its divisors is an integer number (34017518).

Almost surely, 2^102052551 is an apocalyptic number.

102052551 is a deficient number, since it is larger than the sum of its proper divisors (34017521).

102052551 is an equidigital number, since it uses as much as digits as its factorization.

102052551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34017520.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 102052551 is about 10102.1062655270. The cubic root of 102052551 is about 467.3130994342.

The spelling of 102052551 in words is "one hundred two million, fifty-two thousand, five hundred fifty-one".