54418987 has 4 divisors (see below), whose sum is σ = 62193136. Its totient is φ = 46644840.

The previous prime is 54418963. The next prime is 54418999. The reversal of 54418987 is 78981445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78981445 = 5 ⋅15796289.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54418987 is a prime.

It is a super-2 number, since 2×54418987² = 5922852292212338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54418927) 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, 3887064 + ... + 3887077.

It is an arithmetic number, because the mean of its divisors is an integer number (15548284).

Almost surely, 2^54418987 is an apocalyptic number.

54418987 is a deficient number, since it is larger than the sum of its proper divisors (7774149).

54418987 is an equidigital number, since it uses as much as digits as its factorization.

54418987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7774148.

The product of its digits is 322560, while the sum is 46.

The square root of 54418987 is about 7376.9225968557. The cubic root of 54418987 is about 378.9513725457.

The spelling of 54418987 in words is "fifty-four million, four hundred eighteen thousand, nine hundred eighty-seven".