51938370 has 96 divisors (see below), whose sum is σ = 153788544. Its totient is φ = 12038400.

The previous prime is 51938363. The next prime is 51938371. The reversal of 51938370 is 7383915.

It is not an unprimeable number, because it can be changed into a prime (51938371) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21630 + ... + 23910.

It is an arithmetic number, because the mean of its divisors is an integer number (1601964).

Almost surely, 2^51938370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51938370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76894272).

51938370 is an abundant number, since it is smaller than the sum of its proper divisors (101850174).

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

51938370 is a wasteful number, since it uses less digits than its factorization.

51938370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2325 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 51938370 is about 7206.8280123783. The cubic root of 51938370 is about 373.1035992709.

The spelling of 51938370 in words is "fifty-one million, nine hundred thirty-eight thousand, three hundred seventy".