53525191 has 4 divisors (see below), whose sum is σ = 53696512. Its totient is φ = 53353872.

The previous prime is 53525183. The next prime is 53525201. The reversal of 53525191 is 19152535.

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

It is a cyclic number.

It is not a de Polignac number, because 53525191 - 2³ = 53525183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53525141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85191 + ... + 85816.

It is an arithmetic number, because the mean of its divisors is an integer number (13424128).

Almost surely, 2^53525191 is an apocalyptic number.

53525191 is a deficient number, since it is larger than the sum of its proper divisors (171321).

53525191 is a wasteful number, since it uses less digits than its factorization.

53525191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171320.

The product of its digits is 6750, while the sum is 31.

The square root of 53525191 is about 7316.0912378127. The cubic root of 53525191 is about 376.8652338400.

The spelling of 53525191 in words is "fifty-three million, five hundred twenty-five thousand, one hundred ninety-one".