51861108 has 48 divisors (see below), whose sum is σ = 137184320. Its totient is φ = 15116544.

The previous prime is 51861097. The next prime is 51861119. The reversal of 51861108 is 80116815.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51861097) and next prime (51861119).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5785 + ... + 11712.

Almost surely, 2^51861108 is an apocalyptic number.

It is an amenable number.

51861108 is an abundant number, since it is smaller than the sum of its proper divisors (85323212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51861108 is a wasteful number, since it uses less digits than its factorization.

51861108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17536 (or 17534 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 51861108 is about 7201.4656841507. The cubic root of 51861108 is about 372.9185014582.

The spelling of 51861108 in words is "fifty-one million, eight hundred sixty-one thousand, one hundred eight".