53147725 has 12 divisors (see below), whose sum is σ = 67685524. Its totient is φ = 41368320.

The previous prime is 53147701. The next prime is 53147753. The reversal of 53147725 is 52774135.

It can be written as a sum of positive squares in 6 ways, for example, as 2268036 + 50879689 = 1506^2 + 7133^2 .

It is not a de Polignac number, because 53147725 - 2⁷ = 53147597 is a prime.

It is a Duffinian number.

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, 27804 + ... + 29653.

Almost surely, 2^53147725 is an apocalyptic number.

It is an amenable number.

53147725 is a deficient number, since it is larger than the sum of its proper divisors (14537799).

53147725 is a wasteful number, since it uses less digits than its factorization.

53147725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57504 (or 57499 counting only the distinct ones).

The product of its digits is 29400, while the sum is 34.

The square root of 53147725 is about 7290.2486240183. The cubic root of 53147725 is about 375.9772436997.

The spelling of 53147725 in words is "fifty-three million, one hundred forty-seven thousand, seven hundred twenty-five".