52212345506 has 8 divisors (see below), whose sum is σ = 78320646684. Its totient is φ = 26105463280.

The previous prime is 52212345467. The next prime is 52212345509. The reversal of 52212345506 is 60554321225.

It can be written as a sum of positive squares in 2 ways, for example, as 42240525625 + 9971819881 = 205525^2 + 99859^2 .

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

It is a super-2 number, since 2×52212345506² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52212345509) 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, 257405 + ... + 413136.

Almost surely, 2^52212345506 is an apocalyptic number.

52212345506 is a deficient number, since it is larger than the sum of its proper divisors (26108301178).

52212345506 is a wasteful number, since it uses less digits than its factorization.

52212345506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709476.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 52212345506 in words is "fifty-two billion, two hundred twelve million, three hundred forty-five thousand, five hundred six".