51442532 has 24 divisors (see below), whose sum is σ = 91483392. Its totient is φ = 25308000.

The previous prime is 51442511. The next prime is 51442579. The reversal of 51442532 is 23524415.

It is a happy number.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

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, 89807 + ... + 90377.

It is an arithmetic number, because the mean of its divisors is an integer number (3811808).

Almost surely, 2^51442532 is an apocalyptic number.

It is an amenable number.

51442532 is a deficient number, since it is larger than the sum of its proper divisors (40040860).

51442532 is a wasteful number, since it uses less digits than its factorization.

51442532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 897 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 51442532 is about 7172.3449442982. The cubic root of 51442532 is about 371.9125030275.

Adding to 51442532 its reverse (23524415), we get a palindrome (74966947).

The spelling of 51442532 in words is "fifty-one million, four hundred forty-two thousand, five hundred thirty-two".