53445025 has 12 divisors (see below), whose sum is σ = 70170732. Its totient is φ = 40240640.

The previous prime is 53445013. The next prime is 53445053. The reversal of 53445025 is 52054435.

It can be written as a sum of positive squares in 6 ways, for example, as 3996001 + 49449024 = 1999^2 + 7032^2 .

It is not a de Polignac number, because 53445025 - 2⁹ = 53444513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53444984 and 53445002.

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, 62452 + ... + 63301.

It is an arithmetic number, because the mean of its divisors is an integer number (5847561).

Almost surely, 2^53445025 is an apocalyptic number.

It is an amenable number.

53445025 is a deficient number, since it is larger than the sum of its proper divisors (16725707).

53445025 is a wasteful number, since it uses less digits than its factorization.

53445025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125780 (or 125775 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 53445025 is about 7310.6104396281. The cubic root of 53445025 is about 376.6769930427.

The spelling of 53445025 in words is "fifty-three million, four hundred forty-five thousand, twenty-five".