54808213 has 4 divisors (see below), whose sum is σ = 54868140. Its totient is φ = 54748288.

The previous prime is 54808199. The next prime is 54808219. The reversal of 54808213 is 31280845.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31280845 = 5 ⋅6256169.

It can be written as a sum of positive squares in 2 ways, for example, as 11682724 + 43125489 = 3418^2 + 6567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54808213 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 (54808219) 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, 28570 + ... + 30427.

It is an arithmetic number, because the mean of its divisors is an integer number (13717035).

Almost surely, 2^54808213 is an apocalyptic number.

It is an amenable number.

54808213 is a deficient number, since it is larger than the sum of its proper divisors (59927).

54808213 is an equidigital number, since it uses as much as digits as its factorization.

54808213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59926.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 54808213 is about 7403.2569184110. The cubic root of 54808213 is about 379.8526968311.

The spelling of 54808213 in words is "fifty-four million, eight hundred eight thousand, two hundred thirteen".