51122432 has 18 divisors (see below), whose sum is σ = 102045678. Its totient is φ = 25561088.

The previous prime is 51122413. The next prime is 51122437. The reversal of 51122432 is 23422115.

It can be written as a sum of positive squares in only one way, i.e., 41783296 + 9339136 = 6464^2 + 3056^2 .

It is a super-2 number, since 2×51122432² = 5227006107189248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51122437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99593 + ... + 100104.

Almost surely, 2^51122432 is an apocalyptic number.

It is an amenable number.

51122432 is a deficient number, since it is larger than the sum of its proper divisors (50923246).

51122432 is an equidigital number, since it uses as much as digits as its factorization.

51122432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199713 (or 199699 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 51122432 is about 7149.9952447537. The cubic root of 51122432 is about 371.1394917227.

Adding to 51122432 its reverse (23422115), we get a palindrome (74544547).

The spelling of 51122432 in words is "fifty-one million, one hundred twenty-two thousand, four hundred thirty-two".