51795620 has 24 divisors (see below), whose sum is σ = 108931704. Its totient is φ = 20687616.

The previous prime is 51795613. The next prime is 51795629. The reversal of 51795620 is 2659715.

It can be written as a sum of positive squares in 4 ways, for example, as 20502784 + 31292836 = 4528^2 + 5594^2 .

It is not an unprimeable number, because it can be changed into a prime (51795629) 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, 16064 + ... + 19016.

It is an arithmetic number, because the mean of its divisors is an integer number (4538821).

Almost surely, 2^51795620 is an apocalyptic number.

It is an amenable number.

51795620 is an abundant number, since it is smaller than the sum of its proper divisors (57136084).

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

51795620 is a wasteful number, since it uses less digits than its factorization.

51795620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839 (or 3837 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 51795620 is about 7196.9173956632. The cubic root of 51795620 is about 372.7614668033.

The spelling of 51795620 in words is "fifty-one million, seven hundred ninety-five thousand, six hundred twenty".