49491071 has 4 divisors (see below), whose sum is σ = 56561232. Its totient is φ = 42420912.

The previous prime is 49491061. The next prime is 49491073. The reversal of 49491071 is 17019494.

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 49491071 - 2¹⁰ = 49490047 is a prime.

It is a super-2 number, since 2×49491071² = 4898732217454082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49491073) 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, 3535070 + ... + 3535083.

It is an arithmetic number, because the mean of its divisors is an integer number (14140308).

Almost surely, 2^49491071 is an apocalyptic number.

49491071 is a deficient number, since it is larger than the sum of its proper divisors (7070161).

49491071 is an equidigital number, since it uses as much as digits as its factorization.

49491071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070160.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 49491071 is about 7034.9890547179. The cubic root of 49491071 is about 367.1489445354.

The spelling of 49491071 in words is "forty-nine million, four hundred ninety-one thousand, seventy-one".