51522432 has 64 divisors (see below), whose sum is σ = 147398160. Its totient is φ = 15851520.

The previous prime is 51522409. The next prime is 51522439. The reversal of 51522432 is 23422515.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169 + ... + 10152.

Almost surely, 2^51522432 is an apocalyptic number.

51522432 is a gapful number since it is divisible by the number (52) 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 51522432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73699080).

51522432 is an abundant number, since it is smaller than the sum of its proper divisors (95875728).

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

51522432 is a wasteful number, since it uses less digits than its factorization.

51522432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351 (or 10339 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 51522432 is about 7177.9127885479. The cubic root of 51522432 is about 372.1049536214.

Adding to 51522432 its reverse (23422515), we get a palindrome (74944947).

The spelling of 51522432 in words is "fifty-one million, five hundred twenty-two thousand, four hundred thirty-two".