51321152 has 28 divisors (see below), whose sum is σ = 102108000. Its totient is φ = 25593216.

The previous prime is 51321131. The next prime is 51321157. The reversal of 51321152 is 25112315.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51321157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31133 + ... + 32739.

Almost surely, 2^51321152 is an apocalyptic number.

It is an amenable number.

51321152 is a deficient number, since it is larger than the sum of its proper divisors (50786848).

51321152 is a wasteful number, since it uses less digits than its factorization.

51321152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118 (or 2108 counting only the distinct ones).

The product of its digits is 300, while the sum is 20.

The square root of 51321152 is about 7163.8782792563. The cubic root of 51321152 is about 371.6197602352.

Adding to 51321152 its reverse (25112315), we get a palindrome (76433467).

The spelling of 51321152 in words is "fifty-one million, three hundred twenty-one thousand, one hundred fifty-two".