54251439 has 24 divisors (see below), whose sum is σ = 80336256. Its totient is φ = 32538000.

The previous prime is 54251429. The next prime is 54251447. The reversal of 54251439 is 93415245.

It is not a de Polignac number, because 54251439 - 2¹² = 54247343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54251419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36664 + ... + 38114.

It is an arithmetic number, because the mean of its divisors is an integer number (3347344).

Almost surely, 2^54251439 is an apocalyptic number.

54251439 is a deficient number, since it is larger than the sum of its proper divisors (26084817).

54251439 is a wasteful number, since it uses less digits than its factorization.

54251439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579 (or 1568 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 54251439 is about 7365.5576163655. The cubic root of 54251439 is about 378.5620610135.

The spelling of 54251439 in words is "fifty-four million, two hundred fifty-one thousand, four hundred thirty-nine".