51767736 has 64 divisors (see below), whose sum is σ = 134510880. Its totient is φ = 16588800.

The previous prime is 51767713. The next prime is 51767741. The reversal of 51767736 is 63776715.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 85836 + ... + 86436.

Almost surely, 2^51767736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51767736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67255440).

51767736 is an abundant number, since it is smaller than the sum of its proper divisors (82743144).

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

51767736 is a wasteful number, since it uses less digits than its factorization.

51767736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 740 counting only the distinct ones).

The product of its digits is 185220, while the sum is 42.

The square root of 51767736 is about 7194.9799165807. The cubic root of 51767736 is about 372.6945631635.

The spelling of 51767736 in words is "fifty-one million, seven hundred sixty-seven thousand, seven hundred thirty-six".