54492821 has 4 divisors (see below), whose sum is σ = 55239372. Its totient is φ = 53746272.

The previous prime is 54492799. The next prime is 54492847. The reversal of 54492821 is 12829445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41460721 + 13032100 = 6439^2 + 3610^2 .

It is a cyclic number.

It is not a de Polignac number, because 54492821 - 2¹⁴ = 54476437 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 (54492121) 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, 373166 + ... + 373311.

It is an arithmetic number, because the mean of its divisors is an integer number (13809843).

Almost surely, 2^54492821 is an apocalyptic number.

It is an amenable number.

54492821 is a deficient number, since it is larger than the sum of its proper divisors (746551).

54492821 is an equidigital number, since it uses as much as digits as its factorization.

54492821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746550.

The product of its digits is 23040, while the sum is 35.

The square root of 54492821 is about 7381.9252908709. The cubic root of 54492821 is about 379.1226782658.

The spelling of 54492821 in words is "fifty-four million, four hundred ninety-two thousand, eight hundred twenty-one".