51432696 has 192 divisors, whose sum is σ = 172972800. Its totient is φ = 13478400.

The previous prime is 51432691. The next prime is 51432697. The reversal of 51432696 is 69623415.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51432696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 392551 + ... + 392681.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^51432696 is an apocalyptic number.

51432696 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51432696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86486400).

51432696 is an abundant number, since it is smaller than the sum of its proper divisors (121540104).

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

51432696 is a wasteful number, since it uses less digits than its factorization.

51432696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 203 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 51432696 is about 7171.6592222442. The cubic root of 51432696 is about 371.8887978403. Note that the first 3 decimals are identical.

The spelling of 51432696 in words is "fifty-one million, four hundred thirty-two thousand, six hundred ninety-six".