5991617251 has 8 divisors (see below), whose sum is σ = 6014682000. Its totient is φ = 5968597728.

The previous prime is 5991617249. The next prime is 5991617267. The reversal of 5991617251 is 1527161995.

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 5991617251 - 2¹ = 5991617249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5991617851) 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, 267165 + ... + 288721.

It is an arithmetic number, because the mean of its divisors is an integer number (751835250).

Almost surely, 2^5991617251 is an apocalyptic number.

5991617251 is a deficient number, since it is larger than the sum of its proper divisors (23064749).

5991617251 is a wasteful number, since it uses less digits than its factorization.

5991617251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22613.

The product of its digits is 170100, while the sum is 46.

The square root of 5991617251 is about 77405.5375990633. The cubic root of 5991617251 is about 1816.2739503194.

The spelling of 5991617251 in words is "five billion, nine hundred ninety-one million, six hundred seventeen thousand, two hundred fifty-one".