53531087 has 4 divisors (see below), whose sum is σ = 54776040. Its totient is φ = 52286136.

The previous prime is 53531077. The next prime is 53531131. The reversal of 53531087 is 78013535.

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 53531087 - 2¹⁰ = 53530063 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 (53531047) 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, 622412 + ... + 622497.

It is an arithmetic number, because the mean of its divisors is an integer number (13694010).

Almost surely, 2^53531087 is an apocalyptic number.

53531087 is a deficient number, since it is larger than the sum of its proper divisors (1244953).

53531087 is a wasteful number, since it uses less digits than its factorization.

53531087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244952.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 53531087 is about 7316.4941741247. The cubic root of 53531087 is about 376.8790710370.

The spelling of 53531087 in words is "fifty-three million, five hundred thirty-one thousand, eighty-seven".