54879391 has 8 divisors (see below), whose sum is σ = 66020480. Its totient is φ = 44563608.

The previous prime is 54879389. The next prime is 54879401. The reversal of 54879391 is 19397845.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54879391 - 2¹ = 54879389 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 (54879301) 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, 206181 + ... + 206446.

It is an arithmetic number, because the mean of its divisors is an integer number (8252560).

Almost surely, 2^54879391 is an apocalyptic number.

54879391 is a deficient number, since it is larger than the sum of its proper divisors (11141089).

54879391 is a wasteful number, since it uses less digits than its factorization.

54879391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412653.

The product of its digits is 272160, while the sum is 46.

The square root of 54879391 is about 7408.0625672304. The cubic root of 54879391 is about 380.0170606375.

It can be divided in two parts, 5487 and 9391, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 54879391 in words is "fifty-four million, eight hundred seventy-nine thousand, three hundred ninety-one".