54587987 has 4 divisors (see below), whose sum is σ = 56063376. Its totient is φ = 53112600.

The previous prime is 54587959. The next prime is 54587989. The reversal of 54587987 is 78978545.

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 54587987 - 2¹⁰ = 54586963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54587989) 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, 737639 + ... + 737712.

It is an arithmetic number, because the mean of its divisors is an integer number (14015844).

Almost surely, 2^54587987 is an apocalyptic number.

54587987 is a deficient number, since it is larger than the sum of its proper divisors (1475389).

54587987 is a wasteful number, since it uses less digits than its factorization.

54587987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475388.

The product of its digits is 2822400, while the sum is 53.

The square root of 54587987 is about 7388.3683584402. The cubic root of 54587987 is about 379.3432492537.

The spelling of 54587987 in words is "fifty-four million, five hundred eighty-seven thousand, nine hundred eighty-seven".