53476409 has 4 divisors (see below), whose sum is σ = 61115904. Its totient is φ = 45836916.

The previous prime is 53476399. The next prime is 53476421. The reversal of 53476409 is 90467435.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53476409 - 2²⁴ = 36699193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53479409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3819737 + ... + 3819750.

It is an arithmetic number, because the mean of its divisors is an integer number (15278976).

Almost surely, 2^53476409 is an apocalyptic number.

It is an amenable number.

53476409 is a deficient number, since it is larger than the sum of its proper divisors (7639495).

53476409 is an equidigital number, since it uses as much as digits as its factorization.

53476409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639494.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 53476409 is about 7312.7565937887. The cubic root of 53476409 is about 376.7507093992.

The spelling of 53476409 in words is "fifty-three million, four hundred seventy-six thousand, four hundred nine".