52021253 has 4 divisors (see below), whose sum is σ = 52036428. Its totient is φ = 52006080.

The previous prime is 52021247. The next prime is 52021261. The reversal of 52021253 is 35212025.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 21362884 + 30658369 = 4622^2 + 5537^2 .

It is a cyclic number.

It is not a de Polignac number, because 52021253 - 2¹⁸ = 51759109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52021553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263 + ... + 10203.

It is an arithmetic number, because the mean of its divisors is an integer number (13009107).

Almost surely, 2^52021253 is an apocalyptic number.

It is an amenable number.

52021253 is a deficient number, since it is larger than the sum of its proper divisors (15175).

52021253 is an equidigital number, since it uses as much as digits as its factorization.

52021253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15174.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 52021253 is about 7212.5760307951. The cubic root of 52021253 is about 373.3019594348.

Adding to 52021253 its reverse (35212025), we get a palindrome (87233278).

The spelling of 52021253 in words is "fifty-two million, twenty-one thousand, two hundred fifty-three".