102612155 has 8 divisors (see below), whose sum is σ = 123237312. Its totient is φ = 82021248.

The previous prime is 102612143. The next prime is 102612199. The reversal of 102612155 is 551216201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102612155 - 2¹⁸ = 102350011 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 102612155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427 + ... + 14396.

It is an arithmetic number, because the mean of its divisors is an integer number (15404664).

Almost surely, 2^102612155 is an apocalyptic number.

102612155 is a deficient number, since it is larger than the sum of its proper divisors (20625157).

102612155 is a wasteful number, since it uses less digits than its factorization.

102612155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17125.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 102612155 is about 10129.7657919618. The cubic root of 102612155 is about 468.1657115828.

Adding to 102612155 its reverse (551216201), we get a palindrome (653828356).

The spelling of 102612155 in words is "one hundred two million, six hundred twelve thousand, one hundred fifty-five".