45851191 has 4 divisors (see below), whose sum is σ = 46212352. Its totient is φ = 45490032.

The previous prime is 45851189. The next prime is 45851207. The reversal of 45851191 is 19115854.

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 45851191 - 2¹ = 45851189 is a prime.

It is a super-2 number, since 2×45851191² = 4204663432236962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45851111) 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, 180390 + ... + 180643.

It is an arithmetic number, because the mean of its divisors is an integer number (11553088).

Almost surely, 2^45851191 is an apocalyptic number.

45851191 is a deficient number, since it is larger than the sum of its proper divisors (361161).

45851191 is a wasteful number, since it uses less digits than its factorization.

45851191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361160.

The product of its digits is 7200, while the sum is 34.

The square root of 45851191 is about 6771.3507515118. The cubic root of 45851191 is about 357.9180003200.

It can be divided in two parts, 4585 and 1191, that added together give a square (5776 = 76²).

The spelling of 45851191 in words is "forty-five million, eight hundred fifty-one thousand, one hundred ninety-one".