53423009 has 2 divisors, whose sum is σ = 53423010. Its totient is φ = 53423008.

The previous prime is 53422991. The next prime is 53423011. The reversal of 53423009 is 90032435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 5536609 = 6920^2 + 2353^2 .

It is a cyclic number.

It is not a de Polignac number, because 53423009 - 2²⁴ = 36645793 is a prime.

It is a super-2 number, since 2×53423009² = 5708035781228162, which contains 22 as substring.

Together with 53423011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53423609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26711504 + 26711505.

It is an arithmetic number, because the mean of its divisors is an integer number (26711505).

Almost surely, 2^53423009 is an apocalyptic number.

It is an amenable number.

53423009 is a deficient number, since it is larger than the sum of its proper divisors (1).

53423009 is an equidigital number, since it uses as much as digits as its factorization.

53423009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 53423009 is about 7309.1045279159. The cubic root of 53423009 is about 376.6252635028.

The spelling of 53423009 in words is "fifty-three million, four hundred twenty-three thousand, nine".