52621717 has 4 divisors (see below), whose sum is σ = 53741376. Its totient is φ = 51502060.

The previous prime is 52621703. The next prime is 52621729. The reversal of 52621717 is 71712625.

52621717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-52621717 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52621417) 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 3 ways as a sum of consecutive naturals, for example, 559759 + ... + 559852.

It is an arithmetic number, because the mean of its divisors is an integer number (13435344).

Almost surely, 2^52621717 is an apocalyptic number.

It is an amenable number.

52621717 is a deficient number, since it is larger than the sum of its proper divisors (1119659).

52621717 is a wasteful number, since it uses less digits than its factorization.

52621717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119658.

The product of its digits is 5880, while the sum is 31.

The square root of 52621717 is about 7254.0827814411. The cubic root of 52621717 is about 374.7327684261.

The spelling of 52621717 in words is "fifty-two million, six hundred twenty-one thousand, seven hundred seventeen".