49247851 has 4 divisors (see below), whose sum is σ = 50578912. Its totient is φ = 47916792.

The previous prime is 49247843. The next prime is 49247873. The reversal of 49247851 is 15874294.

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 49247851 - 2³ = 49247843 is a prime.

It is a pancake number, because a pancake can be divided into 49247851 parts by 9924 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49247551) 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, 665475 + ... + 665548.

It is an arithmetic number, because the mean of its divisors is an integer number (12644728).

Almost surely, 2^49247851 is an apocalyptic number.

49247851 is a deficient number, since it is larger than the sum of its proper divisors (1331061).

49247851 is a wasteful number, since it uses less digits than its factorization.

49247851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331060.

The product of its digits is 80640, while the sum is 40.

The square root of 49247851 is about 7017.6813122284. The cubic root of 49247851 is about 366.5465149940.

The spelling of 49247851 in words is "forty-nine million, two hundred forty-seven thousand, eight hundred fifty-one".