53424509 has 2 divisors, whose sum is σ = 53424510. Its totient is φ = 53424508.

The previous prime is 53424499. The next prime is 53424529. The reversal of 53424509 is 90542435.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46648900 + 6775609 = 6830^2 + 2603^2 .

It is a cyclic number.

It is not a de Polignac number, because 53424509 - 2¹² = 53420413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53424529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26712254 + 26712255.

It is an arithmetic number, because the mean of its divisors is an integer number (26712255).

Almost surely, 2^53424509 is an apocalyptic number.

It is an amenable number.

53424509 is a deficient number, since it is larger than the sum of its proper divisors (1).

53424509 is an equidigital number, since it uses as much as digits as its factorization.

53424509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 53424509 is about 7309.2071389447. The cubic root of 53424509 is about 376.6287884048.

The spelling of 53424509 in words is "fifty-three million, four hundred twenty-four thousand, five hundred nine".