53499487 has 4 divisors (see below), whose sum is σ = 53771256. Its totient is φ = 53227720.

The previous prime is 53499469. The next prime is 53499491. The reversal of 53499487 is 78499435.

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 53499487 - 2¹⁵ = 53466719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53499487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53490487) 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, 135589 + ... + 135982.

It is an arithmetic number, because the mean of its divisors is an integer number (13442814).

Almost surely, 2^53499487 is an apocalyptic number.

53499487 is a deficient number, since it is larger than the sum of its proper divisors (271769).

53499487 is a wasteful number, since it uses less digits than its factorization.

53499487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271768.

The product of its digits is 1088640, while the sum is 49.

The square root of 53499487 is about 7314.3343511218. The cubic root of 53499487 is about 376.8048977949.

The spelling of 53499487 in words is "fifty-three million, four hundred ninety-nine thousand, four hundred eighty-seven".