54378591 has 8 divisors (see below), whose sum is σ = 72711600. Its totient is φ = 36148992.

The previous prime is 54378581. The next prime is 54378613. The reversal of 54378591 is 19587345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54378591 - 2⁵ = 54378559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54378581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24616 + ... + 26733.

It is an arithmetic number, because the mean of its divisors is an integer number (9088950).

Almost surely, 2^54378591 is an apocalyptic number.

54378591 is a deficient number, since it is larger than the sum of its proper divisors (18333009).

54378591 is a wasteful number, since it uses less digits than its factorization.

54378591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51705.

The product of its digits is 151200, while the sum is 42.

The square root of 54378591 is about 7374.1840904604. The cubic root of 54378591 is about 378.8575823090.

It can be divided in two parts, 5437 and 8591, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 54378591 in words is "fifty-four million, three hundred seventy-eight thousand, five hundred ninety-one".