54536381 has 4 divisors (see below), whose sum is σ = 56907552. Its totient is φ = 52165212.

The previous prime is 54536371. The next prime is 54536389. The reversal of 54536381 is 18363545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54536381 is a prime.

It is a super-2 number, since 2×54536381² = 5948433705154322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54536389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1185551 + ... + 1185596.

It is an arithmetic number, because the mean of its divisors is an integer number (14226888).

Almost surely, 2^54536381 is an apocalyptic number.

It is an amenable number.

54536381 is a deficient number, since it is larger than the sum of its proper divisors (2371171).

54536381 is a wasteful number, since it uses less digits than its factorization.

54536381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371170.

The product of its digits is 43200, while the sum is 35.

The square root of 54536381 is about 7384.8751512805. The cubic root of 54536381 is about 379.2236712963.

The spelling of 54536381 in words is "fifty-four million, five hundred thirty-six thousand, three hundred eighty-one".