49451291 has 4 divisors (see below), whose sum is σ = 49531800. Its totient is φ = 49370784.

The previous prime is 49451261. The next prime is 49451299. The reversal of 49451291 is 19215494.

49451291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19215494 = 2 ⋅9607747.

It is a cyclic number.

It is not a de Polignac number, because 49451291 - 2²² = 45256987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49451299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39326 + ... + 40563.

It is an arithmetic number, because the mean of its divisors is an integer number (12382950).

Almost surely, 2^49451291 is an apocalyptic number.

49451291 is a deficient number, since it is larger than the sum of its proper divisors (80509).

49451291 is an equidigital number, since it uses as much as digits as its factorization.

49451291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80508.

The product of its digits is 12960, while the sum is 35.

The square root of 49451291 is about 7032.1611898477. The cubic root of 49451291 is about 367.0505490094.

The spelling of 49451291 in words is "forty-nine million, four hundred fifty-one thousand, two hundred ninety-one".