52198517261 has 8 divisors (see below), whose sum is σ = 56979919200. Its totient is φ = 47423129040.

The previous prime is 52198517257. The next prime is 52198517281. The reversal of 52198517261 is 16271589125.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 52198517261 - 2² = 52198517257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52198517251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485266 + ... + 1520003.

It is an arithmetic number, because the mean of its divisors is an integer number (7122489900).

Almost surely, 2^52198517261 is an apocalyptic number.

It is an amenable number.

52198517261 is a deficient number, since it is larger than the sum of its proper divisors (4781401939).

52198517261 is a wasteful number, since it uses less digits than its factorization.

52198517261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006859.

The product of its digits is 302400, while the sum is 47.

The spelling of 52198517261 in words is "fifty-two billion, one hundred ninety-eight million, five hundred seventeen thousand, two hundred sixty-one".