53930209 has 2 divisors, whose sum is σ = 53930210. Its totient is φ = 53930208.

The previous prime is 53930207. The next prime is 53930221. The reversal of 53930209 is 90203935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44930209 + 9000000 = 6703^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 53930209 - 2¹ = 53930207 is a prime.

Together with 53930207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53930207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26965104 + 26965105.

It is an arithmetic number, because the mean of its divisors is an integer number (26965105).

Almost surely, 2^53930209 is an apocalyptic number.

It is an amenable number.

53930209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53930209 is an equidigital number, since it uses as much as digits as its factorization.

53930209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 53930209 is about 7343.7190169559. The cubic root of 53930209 is about 377.8134093042.

The spelling of 53930209 in words is "fifty-three million, nine hundred thirty thousand, two hundred nine".