51145532 has 24 divisors (see below), whose sum is σ = 92247792. Its totient is φ = 24796800.

The previous prime is 51145519. The next prime is 51145553. The reversal of 51145532 is 23554115.

51145532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28823 + ... + 30545.

It is an arithmetic number, because the mean of its divisors is an integer number (3843658).

Almost surely, 2^51145532 is an apocalyptic number.

It is an amenable number.

51145532 is a deficient number, since it is larger than the sum of its proper divisors (41102260).

51145532 is a wasteful number, since it uses less digits than its factorization.

51145532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1947 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 51145532 is about 7151.6104480040. The cubic root of 51145532 is about 371.1953838946.

Adding to 51145532 its reverse (23554115), we get a palindrome (74699647).

The spelling of 51145532 in words is "fifty-one million, one hundred forty-five thousand, five hundred thirty-two".