49491591 has 8 divisors (see below), whose sum is σ = 66893040. Its totient is φ = 32542272.

The previous prime is 49491587. The next prime is 49491601. The reversal of 49491591 is 19519494.

It is a happy number.

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

It is not a de Polignac number, because 49491591 - 2² = 49491587 is a prime.

It is a super-2 number, since 2×49491591² = 4898835159422562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49491511) 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, 112776 + ... + 113213.

It is an arithmetic number, because the mean of its divisors is an integer number (8361630).

Almost surely, 2^49491591 is an apocalyptic number.

49491591 is a deficient number, since it is larger than the sum of its proper divisors (17401449).

49491591 is a wasteful number, since it uses less digits than its factorization.

49491591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226065.

The product of its digits is 58320, while the sum is 42.

The square root of 49491591 is about 7035.0260127451. The cubic root of 49491591 is about 367.1502304023.

The spelling of 49491591 in words is "forty-nine million, four hundred ninety-one thousand, five hundred ninety-one".