54210109 has 2 divisors, whose sum is σ = 54210110. Its totient is φ = 54210108.

The previous prime is 54210089. The next prime is 54210113. The reversal of 54210109 is 90101245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30415225 + 23794884 = 5515^2 + 4878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54210109 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54210109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54210179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27105054 + 27105055.

It is an arithmetic number, because the mean of its divisors is an integer number (27105055).

Almost surely, 2^54210109 is an apocalyptic number.

It is an amenable number.

54210109 is a deficient number, since it is larger than the sum of its proper divisors (1).

54210109 is an equidigital number, since it uses as much as digits as its factorization.

54210109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 54210109 is about 7362.7514558078. The cubic root of 54210109 is about 378.4659041490.

The spelling of 54210109 in words is "fifty-four million, two hundred ten thousand, one hundred nine".