54111887 has 4 divisors (see below), whose sum is σ = 55132920. Its totient is φ = 53090856.

The previous prime is 54111877. The next prime is 54111913. The reversal of 54111887 is 78811145.

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 54111887 - 2¹⁶ = 54046351 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 (54111857) 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, 510437 + ... + 510542.

It is an arithmetic number, because the mean of its divisors is an integer number (13783230).

Almost surely, 2^54111887 is an apocalyptic number.

54111887 is a deficient number, since it is larger than the sum of its proper divisors (1021033).

54111887 is a wasteful number, since it uses less digits than its factorization.

54111887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021032.

The product of its digits is 8960, while the sum is 35.

The square root of 54111887 is about 7356.0782350380. The cubic root of 54111887 is about 378.2371881849.

The spelling of 54111887 in words is "fifty-four million, one hundred eleven thousand, eight hundred eighty-seven".