49771851 has 4 divisors (see below), whose sum is σ = 66362472. Its totient is φ = 33181232.

The previous prime is 49771837. The next prime is 49771871. The reversal of 49771851 is 15817794.

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 49771851 - 2⁵ = 49771819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49771871) 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, 8295306 + ... + 8295311.

It is an arithmetic number, because the mean of its divisors is an integer number (16590618).

Almost surely, 2^49771851 is an apocalyptic number.

49771851 is a deficient number, since it is larger than the sum of its proper divisors (16590621).

49771851 is a wasteful number, since it uses less digits than its factorization.

49771851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16590620.

The product of its digits is 70560, while the sum is 42.

The square root of 49771851 is about 7054.9167961075. The cubic root of 49771851 is about 367.8419566905.

The spelling of 49771851 in words is "forty-nine million, seven hundred seventy-one thousand, eight hundred fifty-one".