51469776 has 80 divisors (see below), whose sum is σ = 148611520. Its totient is φ = 17055360.

The previous prime is 51469763. The next prime is 51469777. The reversal of 51469776 is 67796415.

It is a happy number.

51469776 is a `hidden beast` number, since 514 + 69 + 7 + 76 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51469777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122046 + ... + 122466.

It is an arithmetic number, because the mean of its divisors is an integer number (1857644).

Almost surely, 2^51469776 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 51469776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74305760).

51469776 is an abundant number, since it is smaller than the sum of its proper divisors (97141744).

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

51469776 is a wasteful number, since it uses less digits than its factorization.

51469776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 709 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 51469776 is about 7174.2439322900. The cubic root of 51469776 is about 371.9781464790.

The spelling of 51469776 in words is "fifty-one million, four hundred sixty-nine thousand, seven hundred seventy-six".