102951861 has 16 divisors (see below), whose sum is σ = 148021440. Its totient is φ = 63434880.

The previous prime is 102951857. The next prime is 102951883. The reversal of 102951861 is 168159201.

It is not a de Polignac number, because 102951861 - 2² = 102951857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102951361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19690 + ... + 24363.

It is an arithmetic number, because the mean of its divisors is an integer number (9251340).

Almost surely, 2^102951861 is an apocalyptic number.

It is an amenable number.

102951861 is a deficient number, since it is larger than the sum of its proper divisors (45069579).

102951861 is a wasteful number, since it uses less digits than its factorization.

102951861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44116.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 102951861 is about 10146.5196496139. The cubic root of 102951861 is about 468.6817762398.

The spelling of 102951861 in words is "one hundred two million, nine hundred fifty-one thousand, eight hundred sixty-one".