51766940 has 12 divisors (see below), whose sum is σ = 108710616. Its totient is φ = 20706768.

The previous prime is 51766933. The next prime is 51766961. The reversal of 51766940 is 4966715.

It is a junction number, because it is equal to n+sod(n) for n = 51766894 and 51766903.

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, 1294154 + ... + 1294193.

It is an arithmetic number, because the mean of its divisors is an integer number (9059218).

Almost surely, 2^51766940 is an apocalyptic number.

It is an amenable number.

51766940 is an abundant number, since it is smaller than the sum of its proper divisors (56943676).

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

51766940 is a wasteful number, since it uses less digits than its factorization.

51766940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588356 (or 2588354 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 51766940 is about 7194.9246000219. The cubic root of 51766940 is about 372.6926529236.

The spelling of 51766940 in words is "fifty-one million, seven hundred sixty-six thousand, nine hundred forty".