53491525 has 6 divisors (see below), whose sum is σ = 66329522. Its totient is φ = 42793200.

The previous prime is 53491489. The next prime is 53491541. The reversal of 53491525 is 52519435.

It can be written as a sum of positive squares in 3 ways, for example, as 40804 + 53450721 = 202^2 + 7311^2 .

It is not a de Polignac number, because 53491525 - 2⁷ = 53491397 is a prime.

It is a super-2 number, since 2×53491525² = 5722686493651250, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 1069806 + ... + 1069855.

Almost surely, 2^53491525 is an apocalyptic number.

It is an amenable number.

53491525 is a deficient number, since it is larger than the sum of its proper divisors (12837997).

53491525 is a wasteful number, since it uses less digits than its factorization.

53491525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139671 (or 2139666 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 53491525 is about 7313.7900571455. The cubic root of 53491525 is about 376.7862043481.

The spelling of 53491525 in words is "fifty-three million, four hundred ninety-one thousand, five hundred twenty-five".