52421225 has 12 divisors (see below), whose sum is σ = 65675484. Its totient is φ = 41502720.

The previous prime is 52421219. The next prime is 52421231. The reversal of 52421225 is 52212425.

It is an interprime number because it is at equal distance from previous prime (52421219) and next prime (52421231).

It can be written as a sum of positive squares in 6 ways, for example, as 5895184 + 46526041 = 2428^2 + 6821^2 .

It is not a de Polignac number, because 52421225 - 2¹⁴ = 52404841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52421225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8384 + ... + 13233.

It is an arithmetic number, because the mean of its divisors is an integer number (5472957).

Almost surely, 2^52421225 is an apocalyptic number.

It is an amenable number.

52421225 is a deficient number, since it is larger than the sum of its proper divisors (13254259).

52421225 is a wasteful number, since it uses less digits than its factorization.

52421225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21724 (or 21719 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 52421225 is about 7240.2503409758. The cubic root of 52421225 is about 374.2562443672.

The spelling of 52421225 in words is "fifty-two million, four hundred twenty-one thousand, two hundred twenty-five".