53515025 has 6 divisors (see below), whose sum is σ = 66358662. Its totient is φ = 42812000.

The previous prime is 53515013. The next prime is 53515027. The reversal of 53515025 is 52051535.

It can be written as a sum of positive squares in 3 ways, for example, as 923521 + 52591504 = 961^2 + 7252^2 .

It is not a de Polignac number, because 53515025 - 2⁴ = 53515009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53514985 and 53515003.

It is not an unprimeable number, because it can be changed into a prime (53515027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1070276 + ... + 1070325.

It is an arithmetic number, because the mean of its divisors is an integer number (11059777).

Almost surely, 2^53515025 is an apocalyptic number.

It is an amenable number.

53515025 is a deficient number, since it is larger than the sum of its proper divisors (12843637).

53515025 is a wasteful number, since it uses less digits than its factorization.

53515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140611 (or 2140606 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 53515025 is about 7315.3964349172. The cubic root of 53515025 is about 376.8413730841.

The spelling of 53515025 in words is "fifty-three million, five hundred fifteen thousand, twenty-five".