54667987 has 16 divisors (see below), whose sum is σ = 64385280. Its totient is φ = 45892000.

The previous prime is 54667979. The next prime is 54667993. The reversal of 54667987 is 78976645.

It is a happy number.

It is not a de Polignac number, because 54667987 - 2³ = 54667979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54667387) 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, 3612 + ... + 11062.

It is an arithmetic number, because the mean of its divisors is an integer number (4024080).

Almost surely, 2^54667987 is an apocalyptic number.

54667987 is a deficient number, since it is larger than the sum of its proper divisors (9717293).

54667987 is a wasteful number, since it uses less digits than its factorization.

54667987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7514.

The product of its digits is 2540160, while the sum is 52.

The square root of 54667987 is about 7393.7802915694. The cubic root of 54667987 is about 379.5284710012.

The spelling of 54667987 in words is "fifty-four million, six hundred sixty-seven thousand, nine hundred eighty-seven".