53529987 has 16 divisors (see below), whose sum is σ = 81674240. Its totient is φ = 30549312.

The previous prime is 53529977. The next prime is 53529989. The reversal of 53529987 is 78992535.

It is a happy number.

It is not a de Polignac number, because 53529987 - 2⁸ = 53529731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53529989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25863 + ... + 27855.

It is an arithmetic number, because the mean of its divisors is an integer number (5104640).

Almost surely, 2^53529987 is an apocalyptic number.

53529987 is a deficient number, since it is larger than the sum of its proper divisors (28144253).

53529987 is a wasteful number, since it uses less digits than its factorization.

53529987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282.

The product of its digits is 680400, while the sum is 48.

The square root of 53529987 is about 7316.4190011234. The cubic root of 53529987 is about 376.8764895475.

The spelling of 53529987 in words is "fifty-three million, five hundred twenty-nine thousand, nine hundred eighty-seven".