102747155 has 32 divisors (see below), whose sum is σ = 149084160. Its totient is φ = 66407040.

The previous prime is 102747137. The next prime is 102747179. The reversal of 102747155 is 551747201.

It is not a de Polignac number, because 102747155 - 2⁶ = 102747091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243845 + ... + 244265.

It is an arithmetic number, because the mean of its divisors is an integer number (4658880).

Almost surely, 2^102747155 is an apocalyptic number.

102747155 is a deficient number, since it is larger than the sum of its proper divisors (46337005).

102747155 is a wasteful number, since it uses less digits than its factorization.

102747155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 102747155 is about 10136.4271318843. The cubic root of 102747155 is about 468.3709331255.

The spelling of 102747155 in words is "one hundred two million, seven hundred forty-seven thousand, one hundred fifty-five".