53625569 has 4 divisors (see below), whose sum is σ = 53761044. Its totient is φ = 53490096.

The previous prime is 53625563. The next prime is 53625571. The reversal of 53625569 is 96552635.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23232400 + 30393169 = 4820^2 + 5513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53625569 is a prime.

It is a super-2 number, since 2×53625569² = 5751403301147522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53625563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67142 + ... + 67935.

It is an arithmetic number, because the mean of its divisors is an integer number (13440261).

Almost surely, 2^53625569 is an apocalyptic number.

It is an amenable number.

53625569 is a deficient number, since it is larger than the sum of its proper divisors (135475).

53625569 is a wasteful number, since it uses less digits than its factorization.

53625569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135474.

The product of its digits is 243000, while the sum is 41.

The square root of 53625569 is about 7322.9481085148. The cubic root of 53625569 is about 377.1006703695.

The spelling of 53625569 in words is "fifty-three million, six hundred twenty-five thousand, five hundred sixty-nine".