49721827 has 4 divisors (see below), whose sum is σ = 49872376. Its totient is φ = 49571280.

The previous prime is 49721813. The next prime is 49721849. The reversal of 49721827 is 72812794.

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 49721827 - 2¹⁹ = 49197539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49721827.

It is not an unprimeable number, because it can be changed into a prime (49721627) 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, 74778 + ... + 75439.

It is an arithmetic number, because the mean of its divisors is an integer number (12468094).

Almost surely, 2^49721827 is an apocalyptic number.

49721827 is a deficient number, since it is larger than the sum of its proper divisors (150549).

49721827 is a wasteful number, since it uses less digits than its factorization.

49721827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150548.

The product of its digits is 56448, while the sum is 40.

The square root of 49721827 is about 7051.3705759944. The cubic root of 49721827 is about 367.7186802211.

The spelling of 49721827 in words is "forty-nine million, seven hundred twenty-one thousand, eight hundred twenty-seven".