5091185121 has 8 divisors (see below), whose sum is σ = 7405360224. Its totient is φ = 3085566720.

The previous prime is 5091185119. The next prime is 5091185123. The reversal of 5091185121 is 1215811905.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5091185119) and next prime (5091185123).

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

It is not a de Polignac number, because 5091185121 - 2¹ = 5091185119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 154278337 = 5091185121 / (5 + 0 + 9 + 1 + 1 + 8 + 5 + 1 + 2 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5091185123) 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, 77139136 + ... + 77139201.

It is an arithmetic number, because the mean of its divisors is an integer number (925670028).

Almost surely, 2^5091185121 is an apocalyptic number.

It is an amenable number.

5091185121 is a deficient number, since it is larger than the sum of its proper divisors (2314175103).

5091185121 is a wasteful number, since it uses less digits than its factorization.

5091185121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154278351.

The product of its (nonzero) digits is 3600, while the sum is 33.

The square root of 5091185121 is about 71352.5410970065. The cubic root of 5091185121 is about 1720.3083457694.

The spelling of 5091185121 in words is "five billion, ninety-one million, one hundred eighty-five thousand, one hundred twenty-one".