52640917 has 8 divisors (see below), whose sum is σ = 60425600. Its totient is φ = 44922384.

The previous prime is 52640881. The next prime is 52640927. The reversal of 52640917 is 71904625.

52640917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52640917 - 2¹⁹ = 52116629 is a prime.

It is a super-2 number, since 2×52640917² = 5542132285201778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52640927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14817 + ... + 18022.

It is an arithmetic number, because the mean of its divisors is an integer number (7553200).

Almost surely, 2^52640917 is an apocalyptic number.

It is an amenable number.

52640917 is a deficient number, since it is larger than the sum of its proper divisors (7784683).

52640917 is a wasteful number, since it uses less digits than its factorization.

52640917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33075.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 52640917 is about 7255.4060534198. The cubic root of 52640917 is about 374.7783389287.

The spelling of 52640917 in words is "fifty-two million, six hundred forty thousand, nine hundred seventeen".