102158055 has 12 divisors (see below), whose sum is σ = 177074040. Its totient is φ = 54484272.

The previous prime is 102158053. The next prime is 102158059. The reversal of 102158055 is 550851201.

102158055 is a `hidden beast` number, since 10 + 21 + 580 + 55 = 666.

It is not a de Polignac number, because 102158055 - 2¹ = 102158053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102158053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1135045 + ... + 1135134.

It is an arithmetic number, because the mean of its divisors is an integer number (14756170).

Almost surely, 2^102158055 is an apocalyptic number.

102158055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102158055 is a deficient number, since it is larger than the sum of its proper divisors (74915985).

102158055 is a wasteful number, since it uses less digits than its factorization.

102158055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270190 (or 2270187 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 102158055 is about 10107.3267979224. The cubic root of 102158055 is about 467.4740832287.

The spelling of 102158055 in words is "one hundred two million, one hundred fifty-eight thousand, fifty-five".