51451132 has 12 divisors (see below), whose sum is σ = 90158040. Its totient is φ = 25691696.

The previous prime is 51451123. The next prime is 51451151. The reversal of 51451132 is 23115415.

It is a happy number.

It is a congruent 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, 4882 + ... + 11257.

It is an arithmetic number, because the mean of its divisors is an integer number (7513170).

Almost surely, 2^51451132 is an apocalyptic number.

It is an amenable number.

51451132 is a deficient number, since it is larger than the sum of its proper divisors (38706908).

51451132 is a wasteful number, since it uses less digits than its factorization.

51451132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940 (or 16938 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 51451132 is about 7172.9444442293. The cubic root of 51451132 is about 371.9332269252.

Adding to 51451132 its reverse (23115415), we get a palindrome (74566547).

The spelling of 51451132 in words is "fifty-one million, four hundred fifty-one thousand, one hundred thirty-two".