102552815 has 4 divisors (see below), whose sum is σ = 123063384. Its totient is φ = 82042248.

The previous prime is 102552803. The next prime is 102552817. The reversal of 102552815 is 518255201.

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

It is a cyclic number.

It is not a de Polignac number, because 102552815 - 2¹⁶ = 102487279 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 (102552817) 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, 10255277 + ... + 10255286.

It is an arithmetic number, because the mean of its divisors is an integer number (30765846).

Almost surely, 2^102552815 is an apocalyptic number.

102552815 is a deficient number, since it is larger than the sum of its proper divisors (20510569).

102552815 is an equidigital number, since it uses as much as digits as its factorization.

102552815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20510568.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 102552815 is about 10126.8363766776. The cubic root of 102552815 is about 468.0754483639.

The spelling of 102552815 in words is "one hundred two million, five hundred fifty-two thousand, eight hundred fifteen".