53438525 has 12 divisors (see below), whose sum is σ = 75730272. Its totient is φ = 36643440.

The previous prime is 53438521. The next prime is 53438527. The reversal of 53438525 is 52583435.

It is not a de Polignac number, because 53438525 - 2² = 53438521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53438521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152507 + ... + 152856.

It is an arithmetic number, because the mean of its divisors is an integer number (6310856).

Almost surely, 2^53438525 is an apocalyptic number.

It is an amenable number.

53438525 is a deficient number, since it is larger than the sum of its proper divisors (22291747).

53438525 is a wasteful number, since it uses less digits than its factorization.

53438525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305380 (or 305375 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 53438525 is about 7310.1658667913. The cubic root of 53438525 is about 376.6617219006.

The spelling of 53438525 in words is "fifty-three million, four hundred thirty-eight thousand, five hundred twenty-five".