52240407 has 4 divisors (see below), whose sum is σ = 69653880. Its totient is φ = 34826936.

The previous prime is 52240403. The next prime is 52240421. The reversal of 52240407 is 70404225.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52240407 - 2² = 52240403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52240403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8706732 + ... + 8706737.

It is an arithmetic number, because the mean of its divisors is an integer number (17413470).

Almost surely, 2^52240407 is an apocalyptic number.

52240407 is a deficient number, since it is larger than the sum of its proper divisors (17413473).

52240407 is a wasteful number, since it uses less digits than its factorization.

52240407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17413472.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 52240407 is about 7227.7525552553. The cubic root of 52240407 is about 373.8254378063.

The spelling of 52240407 in words is "fifty-two million, two hundred forty thousand, four hundred seven".