51243532 has 24 divisors (see below), whose sum is σ = 95135040. Its totient is φ = 24083280.

The previous prime is 51243529. The next prime is 51243541. The reversal of 51243532 is 23534215.

It is a junction number, because it is equal to n+sod(n) for n = 51243497 and 51243506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7383 + ... + 12529.

It is an arithmetic number, because the mean of its divisors is an integer number (3963960).

Almost surely, 2^51243532 is an apocalyptic number.

It is an amenable number.

51243532 is a deficient number, since it is larger than the sum of its proper divisors (43891508).

51243532 is a wasteful number, since it uses less digits than its factorization.

51243532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301 (or 5299 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 51243532 is about 7158.4587726689. The cubic root of 51243532 is about 371.4323152342.

Adding to 51243532 its reverse (23534215), we get a palindrome (74777747).

It can be divided in two parts, 512 and 43532, that added together give a palindrome (44044).

The spelling of 51243532 in words is "fifty-one million, two hundred forty-three thousand, five hundred thirty-two".