54138087 has 24 divisors (see below), whose sum is σ = 82637360. Its totient is φ = 34153488.

The previous prime is 54138083. The next prime is 54138089. The reversal of 54138087 is 78083145.

54138087 is a `hidden beast` number, since 541 + 38 + 0 + 87 = 666.

It is not a de Polignac number, because 54138087 - 2² = 54138083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54138083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61293 + ... + 62169.

Almost surely, 2^54138087 is an apocalyptic number.

54138087 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

54138087 is a deficient number, since it is larger than the sum of its proper divisors (28499273).

54138087 is an equidigital number, since it uses as much as digits as its factorization.

54138087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 54138087 is about 7357.8588597499. The cubic root of 54138087 is about 378.2982235440.

The spelling of 54138087 in words is "fifty-four million, one hundred thirty-eight thousand, eighty-seven".