52266251687 has 4 divisors (see below), whose sum is σ = 56286732600. Its totient is φ = 48245770776.

The previous prime is 52266251603. The next prime is 52266251693. The reversal of 52266251687 is 78615266225.

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 52266251687 - 2¹⁶ = 52266186151 is a prime.

It is a super-2 number, since 2×52266251687² (a number of 22 digits) 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 (52266251087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010240437 + ... + 2010240462.

It is an arithmetic number, because the mean of its divisors is an integer number (14071683150).

Almost surely, 2^52266251687 is an apocalyptic number.

52266251687 is a deficient number, since it is larger than the sum of its proper divisors (4020480913).

52266251687 is a wasteful number, since it uses less digits than its factorization.

52266251687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020480912.

The product of its digits is 2419200, while the sum is 50.

The spelling of 52266251687 in words is "fifty-two billion, two hundred sixty-six million, two hundred fifty-one thousand, six hundred eighty-seven".