54381943 has 16 divisors (see below), whose sum is σ = 68302080. Its totient is φ = 42062400.

The previous prime is 54381923. The next prime is 54381947. The reversal of 54381943 is 34918345.

It is a cyclic number.

It is not a de Polignac number, because 54381943 - 2²⁵ = 20827511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54381947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8163 + ... + 13243.

It is an arithmetic number, because the mean of its divisors is an integer number (4268880).

Almost surely, 2^54381943 is an apocalyptic number.

54381943 is a deficient number, since it is larger than the sum of its proper divisors (13920137).

54381943 is a wasteful number, since it uses less digits than its factorization.

54381943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238.

The product of its digits is 51840, while the sum is 37.

The square root of 54381943 is about 7374.4113663397. The cubic root of 54381943 is about 378.8653666502.

It can be divided in two parts, 5438 and 1943, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 54381943 in words is "fifty-four million, three hundred eighty-one thousand, nine hundred forty-three".