102891051 has 12 divisors (see below), whose sum is σ = 148948800. Its totient is φ = 68442480.

The previous prime is 102891011. The next prime is 102891053. The reversal of 102891051 is 150198201.

It is a de Polignac number, because none of the positive numbers 2^k-102891051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102891053) 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, 8251 + ... + 16548.

It is an arithmetic number, because the mean of its divisors is an integer number (12412400).

Almost surely, 2^102891051 is an apocalyptic number.

102891051 is a deficient number, since it is larger than the sum of its proper divisors (46057749).

102891051 is a wasteful number, since it uses less digits than its factorization.

102891051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25266 (or 25263 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 102891051 is about 10143.5226129782. The cubic root of 102891051 is about 468.5894801842.

The spelling of 102891051 in words is "one hundred two million, eight hundred ninety-one thousand, fifty-one".