52811998247 has 4 divisors (see below), whose sum is σ = 52831353120. Its totient is φ = 52792643376.

The previous prime is 52811998237. The next prime is 52811998313. The reversal of 52811998247 is 74289911825.

52811998247 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.

It is a cyclic number.

It is not a de Polignac number, because 52811998247 - 2¹⁴ = 52811981863 is a prime.

It is a super-2 number, since 2×52811998247² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52811998192 and 52811998201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52811998237) 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, 9673343 + ... + 9678800.

It is an arithmetic number, because the mean of its divisors is an integer number (13207838280).

Almost surely, 2^52811998247 is an apocalyptic number.

52811998247 is a deficient number, since it is larger than the sum of its proper divisors (19354873).

52811998247 is a wasteful number, since it uses less digits than its factorization.

52811998247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19354872.

The product of its digits is 2903040, while the sum is 56.

The spelling of 52811998247 in words is "fifty-two billion, eight hundred eleven million, nine hundred ninety-eight thousand, two hundred forty-seven".