51970944 has 64 divisors (see below), whose sum is σ = 141457680. Its totient is φ = 16896000.

The previous prime is 51970943. The next prime is 51970957. The reversal of 51970944 is 44907915.

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

It is a super-2 number, since 2×51970944² = 5401958040502272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51970943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14094 + ... + 17394.

Almost surely, 2^51970944 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 51970944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70728840).

51970944 is an abundant number, since it is smaller than the sum of its proper divisors (89486736).

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

51970944 is a wasteful number, since it uses less digits than its factorization.

51970944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 51970944 is about 7209.0875983026. The cubic root of 51970944 is about 373.1815823162.

The spelling of 51970944 in words is "fifty-one million, nine hundred seventy thousand, nine hundred forty-four".