252606021707 has 16 divisors (see below), whose sum is σ = 285210363648. Its totient is φ = 221979653280.

The previous prime is 252606021677. The next prime is 252606021713. The reversal of 252606021707 is 707120606252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 252606021707 - 2¹² = 252606017611 is a prime.

It is a Smith number, since the sum of its digits (38) 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 not an unprimeable number, because it can be changed into a prime (252606020707) 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 15 ways as a sum of consecutive naturals, for example, 1938893 + ... + 2065070.

It is an arithmetic number, because the mean of its divisors is an integer number (17825647728).

Almost surely, 2^252606021707 is an apocalyptic number.

252606021707 is a deficient number, since it is larger than the sum of its proper divisors (32604341941).

252606021707 is a wasteful number, since it uses less digits than its factorization.

252606021707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004210.

The product of its (nonzero) digits is 70560, while the sum is 38.

Adding to 252606021707 its reverse (707120606252), we get a palindrome (959726627959).

The spelling of 252606021707 in words is "two hundred fifty-two billion, six hundred six million, twenty-one thousand, seven hundred seven".