49071791 has 4 divisors (see below), whose sum is σ = 50654784. Its totient is φ = 47488800.

The previous prime is 49071769. The next prime is 49071823. The reversal of 49071791 is 19717094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19717094 = 2 ⋅9858547.

It is a cyclic number.

It is not a de Polignac number, because 49071791 - 2⁶ = 49071727 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 (49071751) 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, 791450 + ... + 791511.

It is an arithmetic number, because the mean of its divisors is an integer number (12663696).

Almost surely, 2^49071791 is an apocalyptic number.

49071791 is a deficient number, since it is larger than the sum of its proper divisors (1582993).

49071791 is a wasteful number, since it uses less digits than its factorization.

49071791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582992.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 49071791 is about 7005.1260516853. The cubic root of 49071791 is about 366.1091948269.

The spelling of 49071791 in words is "forty-nine million, seventy-one thousand, seven hundred ninety-one".