53017225 has 12 divisors (see below), whose sum is σ = 66983436. Its totient is φ = 41612480.

The previous prime is 53017213. The next prime is 53017259. The reversal of 53017225 is 52271035.

53017225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 207936 + 52809289 = 456^2 + 7267^2 .

It is a de Polignac number, because none of the positive numbers 2^k-53017225 is a prime.

It is a super-2 number, since 2×53017225² = 5621652293401250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 53017225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18682 + ... + 21331.

It is an arithmetic number, because the mean of its divisors is an integer number (5581953).

Almost surely, 2^53017225 is an apocalyptic number.

It is an amenable number.

53017225 is a deficient number, since it is larger than the sum of its proper divisors (13966211).

53017225 is a wasteful number, since it uses less digits than its factorization.

53017225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40076 (or 40071 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 53017225 is about 7281.2928110329. The cubic root of 53017225 is about 375.6692641102.

The spelling of 53017225 in words is "fifty-three million, seventeen thousand, two hundred twenty-five".