52021870 has 16 divisors (see below), whose sum is σ = 99147888. Its totient is φ = 19584640.

The previous prime is 52021859. The next prime is 52021877. The reversal of 52021870 is 7812025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52021877) 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, 152836 + ... + 153175.

It is an arithmetic number, because the mean of its divisors is an integer number (6196743).

Almost surely, 2^52021870 is an apocalyptic number.

52021870 is a deficient number, since it is larger than the sum of its proper divisors (47126018).

52021870 is a wasteful number, since it uses less digits than its factorization.

52021870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306035.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 52021870 is about 7212.6188031810. The cubic root of 52021870 is about 373.3034352829.

Adding to 52021870 its reverse (7812025), we get a palindrome (59833895).

The spelling of 52021870 in words is "fifty-two million, twenty-one thousand, eight hundred seventy".