51269764 has 48 divisors (see below), whose sum is σ = 111823488. Its totient is φ = 20026368.

The previous prime is 51269749. The next prime is 51269791. The reversal of 51269764 is 46796215.

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, 29364 + ... + 31060.

It is an arithmetic number, because the mean of its divisors is an integer number (2329656).

Almost surely, 2^51269764 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 51269764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55911744).

51269764 is an abundant number, since it is smaller than the sum of its proper divisors (60553724).

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

51269764 is a wasteful number, since it uses less digits than its factorization.

51269764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804 (or 1802 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 51269764 is about 7160.2907762185. The cubic root of 51269764 is about 371.4956842098.

The spelling of 51269764 in words is "fifty-one million, two hundred sixty-nine thousand, seven hundred sixty-four".