51523232 has 12 divisors (see below), whose sum is σ = 101436426. Its totient is φ = 25761600.

The previous prime is 51523229. The next prime is 51523237. The reversal of 51523232 is 23232515.

It can be written as a sum of positive squares in only one way, i.e., 46840336 + 4682896 = 6844^2 + 2164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51523198 and 51523207.

It is not an unprimeable number, because it can be changed into a prime (51523237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805019 + ... + 805082.

Almost surely, 2^51523232 is an apocalyptic number.

It is an amenable number.

51523232 is a deficient number, since it is larger than the sum of its proper divisors (49913194).

51523232 is a wasteful number, since it uses less digits than its factorization.

51523232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610111 (or 1610103 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 51523232 is about 7177.9685148376. The cubic root of 51523232 is about 372.1068795295.

Adding to 51523232 its reverse (23232515), we get a palindrome (74755747).

The spelling of 51523232 in words is "fifty-one million, five hundred twenty-three thousand, two hundred thirty-two".