54204989 has 2 divisors, whose sum is σ = 54204990. Its totient is φ = 54204988.

The previous prime is 54204979. The next prime is 54204991. The reversal of 54204989 is 98940245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28783225 + 25421764 = 5365^2 + 5042^2 .

It is a cyclic number.

It is not a de Polignac number, because 54204989 - 2²⁴ = 37427773 is a prime.

Together with 54204991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54204919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27102494 + 27102495.

It is an arithmetic number, because the mean of its divisors is an integer number (27102495).

Almost surely, 2^54204989 is an apocalyptic number.

It is an amenable number.

54204989 is a deficient number, since it is larger than the sum of its proper divisors (1).

54204989 is an equidigital number, since it uses as much as digits as its factorization.

54204989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 54204989 is about 7362.4037514931. The cubic root of 54204989 is about 378.4539887426.

The spelling of 54204989 in words is "fifty-four million, two hundred four thousand, nine hundred eighty-nine".