51661016 has 16 divisors (see below), whose sum is σ = 105670440. Its totient is φ = 23482240.

The previous prime is 51661003. The next prime is 51661063. The reversal of 51661016 is 61016615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293441 + ... + 293616.

Almost surely, 2^51661016 is an apocalyptic number.

It is an amenable number.

51661016 is an abundant number, since it is smaller than the sum of its proper divisors (54009424).

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

51661016 is a wasteful number, since it uses less digits than its factorization.

51661016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587074 (or 587070 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 51661016 is about 7187.5598084468. The cubic root of 51661016 is about 372.4382817435.

The spelling of 51661016 in words is "fifty-one million, six hundred sixty-one thousand, sixteen".