102158554 has 32 divisors (see below), whose sum is σ = 167388480. Its totient is φ = 46593792.

The previous prime is 102158549. The next prime is 102158569. The reversal of 102158554 is 455851201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158557 + ... + 159199.

It is an arithmetic number, because the mean of its divisors is an integer number (5230890).

Almost surely, 2^102158554 is an apocalyptic number.

102158554 is a deficient number, since it is larger than the sum of its proper divisors (65229926).

102158554 is a wasteful number, since it uses less digits than its factorization.

102158554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 102158554 is about 10107.3514829554. The cubic root of 102158554 is about 467.4748443669.

It can be divided in two parts, 10215 and 8554, that added together give a square (18769 = 137²).

The spelling of 102158554 in words is "one hundred two million, one hundred fifty-eight thousand, five hundred fifty-four".