49442591 has 4 divisors (see below), whose sum is σ = 53937384. Its totient is φ = 44947800.

The previous prime is 49442581. The next prime is 49442611. The reversal of 49442591 is 19524494.

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 49442591 - 2⁶ = 49442527 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 (49442501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2247380 + ... + 2247401.

It is an arithmetic number, because the mean of its divisors is an integer number (13484346).

Almost surely, 2^49442591 is an apocalyptic number.

49442591 is a deficient number, since it is larger than the sum of its proper divisors (4494793).

49442591 is a wasteful number, since it uses less digits than its factorization.

49442591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494792.

The product of its digits is 51840, while the sum is 38.

The square root of 49442591 is about 7031.5425761351. The cubic root of 49442591 is about 367.0290225943.

The spelling of 49442591 in words is "forty-nine million, four hundred forty-two thousand, five hundred ninety-one".