102152045 has 4 divisors (see below), whose sum is σ = 122582460. Its totient is φ = 81721632.

The previous prime is 102152027. The next prime is 102152053. The reversal of 102152045 is 540251201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 81667369 + 20484676 = 9037^2 + 4526^2 .

It is a cyclic number.

It is not a de Polignac number, because 102152045 - 2⁶ = 102151981 is a prime.

It is a congruent number.

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, 10215200 + ... + 10215209.

It is an arithmetic number, because the mean of its divisors is an integer number (30645615).

Almost surely, 2^102152045 is an apocalyptic number.

It is an amenable number.

102152045 is a deficient number, since it is larger than the sum of its proper divisors (20430415).

102152045 is an equidigital number, since it uses as much as digits as its factorization.

102152045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20430414.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 102152045 is about 10107.0294844727. The cubic root of 102152045 is about 467.4649158187.

It can be divided in two parts, 1021520 and 45, that multiplied together give a square (45968400 = 6780²).

The spelling of 102152045 in words is "one hundred two million, one hundred fifty-two thousand, forty-five".