53987667 has 8 divisors (see below), whose sum is σ = 72792720. Its totient is φ = 35587200.

The previous prime is 53987629. The next prime is 53987669. The reversal of 53987667 is 76678935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53987667 - 2⁶ = 53987603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53987669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100834 + ... + 101367.

It is an arithmetic number, because the mean of its divisors is an integer number (9099090).

Almost surely, 2^53987667 is an apocalyptic number.

53987667 is a deficient number, since it is larger than the sum of its proper divisors (18805053).

53987667 is a wasteful number, since it uses less digits than its factorization.

53987667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202293.

The product of its digits is 1905120, while the sum is 51.

The square root of 53987667 is about 7347.6300260696. The cubic root of 53987667 is about 377.9475375807.

The spelling of 53987667 in words is "fifty-three million, nine hundred eighty-seven thousand, six hundred sixty-seven".