52697409 has 4 divisors (see below), whose sum is σ = 70263216. Its totient is φ = 35131604.

The previous prime is 52697291. The next prime is 52697413. The reversal of 52697409 is 90479625.

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 52697409 - 2⁸ = 52697153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52697419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8782899 + ... + 8782904.

It is an arithmetic number, because the mean of its divisors is an integer number (17565804).

Almost surely, 2^52697409 is an apocalyptic number.

It is an amenable number.

52697409 is a deficient number, since it is larger than the sum of its proper divisors (17565807).

52697409 is a wasteful number, since it uses less digits than its factorization.

52697409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17565806.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 52697409 is about 7259.2981065665. The cubic root of 52697409 is about 374.9123564068.

The spelling of 52697409 in words is "fifty-two million, six hundred ninety-seven thousand, four hundred nine".