52420261 has 4 divisors (see below), whose sum is σ = 53308800. Its totient is φ = 51531724.

The previous prime is 52420253. The next prime is 52420271. The reversal of 52420261 is 16202425.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52420261 - 2³ = 52420253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52420241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444181 + ... + 444298.

It is an arithmetic number, because the mean of its divisors is an integer number (13327200).

Almost surely, 2^52420261 is an apocalyptic number.

It is an amenable number.

52420261 is a deficient number, since it is larger than the sum of its proper divisors (888539).

52420261 is an equidigital number, since it uses as much as digits as its factorization.

52420261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888538.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 52420261 is about 7240.1837683860. The cubic root of 52420261 is about 374.2539502251.

Adding to 52420261 its reverse (16202425), we get a palindrome (68622686).

The spelling of 52420261 in words is "fifty-two million, four hundred twenty thousand, two hundred sixty-one".