51505132 has 12 divisors (see below), whose sum is σ = 103010320. Its totient is φ = 22073616.

The previous prime is 51505127. The next prime is 51505159. The reversal of 51505132 is 23150515.

51505132 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919707 + ... + 919762.

Almost surely, 2^51505132 is an apocalyptic number.

It is an amenable number.

51505132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51505132 is a wasteful number, since it uses less digits than its factorization.

51505132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839480 (or 1839478 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51505132 is about 7176.7076016792. The cubic root of 51505132 is about 372.0633009787.

Adding to 51505132 its reverse (23150515), we get a palindrome (74655647).

It can be divided in two parts, 5150513 and 2, that added together give a palindrome (5150515).

The spelling of 51505132 in words is "fifty-one million, five hundred five thousand, one hundred thirty-two".