54820279 has 4 divisors (see below), whose sum is σ = 54849960. Its totient is φ = 54790600.

The previous prime is 54820261. The next prime is 54820289. The reversal of 54820279 is 97202845.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97202845 = 5 ⋅19440569.

It is a cyclic number.

It is not a de Polignac number, because 54820279 - 2¹⁵ = 54787511 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 (54820289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11872 + ... + 15829.

It is an arithmetic number, because the mean of its divisors is an integer number (13712490).

Almost surely, 2^54820279 is an apocalyptic number.

54820279 is the 3958-th nonagonal number.

54820279 is a deficient number, since it is larger than the sum of its proper divisors (29681).

54820279 is a wasteful number, since it uses less digits than its factorization.

54820279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29680.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 54820279 is about 7404.0717851733. The cubic root of 54820279 is about 379.8805695780.

It can be divided in two parts, 5 and 4820279, that added together give a palindrome (4820284).

The spelling of 54820279 in words is "fifty-four million, eight hundred twenty thousand, two hundred seventy-nine".