51943948 has 48 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 20952000.

The previous prime is 51943939. The next prime is 51943949. The reversal of 51943948 is 84934915.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51943949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133338 + ... + 133726.

It is an arithmetic number, because the mean of its divisors is an integer number (2293200).

Almost surely, 2^51943948 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 51943948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55036800).

51943948 is an abundant number, since it is smaller than the sum of its proper divisors (58129652).

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

51943948 is a wasteful number, since it uses less digits than its factorization.

51943948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 51943948 is about 7207.2149960994. The cubic root of 51943948 is about 373.1169554683.

The spelling of 51943948 in words is "fifty-one million, nine hundred forty-three thousand, nine hundred forty-eight".