51375632 has 120 divisors (see below), whose sum is σ = 132991488. Its totient is φ = 18754560.

The previous prime is 51375613. The next prime is 51375641. The reversal of 51375632 is 23657315.

51375632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 230273 + ... + 230495.

Almost surely, 2^51375632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51375632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66495744).

51375632 is an abundant number, since it is smaller than the sum of its proper divisors (81615856).

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

51375632 is a wasteful number, since it uses less digits than its factorization.

51375632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 260 counting only the distinct ones).

The product of its digits is 18900, while the sum is 32.

The square root of 51375632 is about 7167.6796803429. The cubic root of 51375632 is about 371.7512114593.

The spelling of 51375632 in words is "fifty-one million, three hundred seventy-five thousand, six hundred thirty-two".