49720851 has 8 divisors (see below), whose sum is σ = 73660560. Its totient is φ = 33147216.

The previous prime is 49720849. The next prime is 49720861. The reversal of 49720851 is 15802794.

It is not a de Polignac number, because 49720851 - 2¹ = 49720849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49720831) 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, 920730 + ... + 920783.

It is an arithmetic number, because the mean of its divisors is an integer number (9207570).

Almost surely, 2^49720851 is an apocalyptic number.

49720851 is a deficient number, since it is larger than the sum of its proper divisors (23939709).

49720851 is a wasteful number, since it uses less digits than its factorization.

49720851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841522 (or 1841516 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 49720851 is about 7051.3013692509. The cubic root of 49720851 is about 367.7162741968.

The spelling of 49720851 in words is "forty-nine million, seven hundred twenty thousand, eight hundred fifty-one".