53066409 has 16 divisors (see below), whose sum is σ = 78646464. Its totient is φ = 31553600.

The previous prime is 53066381. The next prime is 53066413. The reversal of 53066409 is 90466035.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53066409 - 2¹⁶ = 53000873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 53066409.

It is not an unprimeable number, because it can be changed into a prime (53066459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13422 + ... + 16919.

It is an arithmetic number, because the mean of its divisors is an integer number (4915404).

Almost surely, 2^53066409 is an apocalyptic number.

It is an amenable number.

53066409 is a deficient number, since it is larger than the sum of its proper divisors (25580055).

53066409 is a wasteful number, since it uses less digits than its factorization.

53066409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30408.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 53066409 is about 7284.6694502908. The cubic root of 53066409 is about 375.7853974760.

The spelling of 53066409 in words is "fifty-three million, sixty-six thousand, four hundred nine".