51970432 has 64 divisors (see below), whose sum is σ = 109670400. Its totient is φ = 24482304.

The previous prime is 51970333. The next prime is 51970439. The reversal of 51970432 is 23407915.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 51970394 and 51970403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51970439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373819 + ... + 373957.

It is an arithmetic number, because the mean of its divisors is an integer number (1713600).

Almost surely, 2^51970432 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 51970432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54835200).

51970432 is an abundant number, since it is smaller than the sum of its proper divisors (57699968).

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

51970432 is a wasteful number, since it uses less digits than its factorization.

51970432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 51970432 is about 7209.0520874800. The cubic root of 51970432 is about 373.1803568263.

The spelling of 51970432 in words is "fifty-one million, nine hundred seventy thousand, four hundred thirty-two".