54986387 has 4 divisors (see below), whose sum is σ = 56023920. Its totient is φ = 53948856.

The previous prime is 54986383. The next prime is 54986401. The reversal of 54986387 is 78368945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78368945 = 5 ⋅15673789.

It is a cyclic number.

It is not a de Polignac number, because 54986387 - 2² = 54986383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54986383) 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, 518687 + ... + 518792.

It is an arithmetic number, because the mean of its divisors is an integer number (14005980).

Almost surely, 2^54986387 is an apocalyptic number.

54986387 is a deficient number, since it is larger than the sum of its proper divisors (1037533).

54986387 is a wasteful number, since it uses less digits than its factorization.

54986387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037532.

The product of its digits is 1451520, while the sum is 50.

The square root of 54986387 is about 7415.2806420256. The cubic root of 54986387 is about 380.2638679770.

The spelling of 54986387 in words is "fifty-four million, nine hundred eighty-six thousand, three hundred eighty-seven".