2455617191 has 4 divisors (see below), whose sum is σ = 2456396712. Its totient is φ = 2454837672.

The previous prime is 2455617163. The next prime is 2455617193. The reversal of 2455617191 is 1917165542.

It is a happy number.

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 2455617191 - 2⁶ = 2455617127 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 (2455617193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385016 + ... + 391341.

It is an arithmetic number, because the mean of its divisors is an integer number (614099178).

Almost surely, 2^2455617191 is an apocalyptic number.

2455617191 is a deficient number, since it is larger than the sum of its proper divisors (779521).

2455617191 is an equidigital number, since it uses as much as digits as its factorization.

2455617191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779520.

The product of its digits is 75600, while the sum is 41.

The square root of 2455617191 is about 49554.1843944586. The cubic root of 2455617191 is about 1349.1292402119.

The spelling of 2455617191 in words is "two billion, four hundred fifty-five million, six hundred seventeen thousand, one hundred ninety-one".