49821783 has 16 divisors (see below), whose sum is σ = 73699200. Its totient is φ = 29682080.

The previous prime is 49821773. The next prime is 49821787. The reversal of 49821783 is 38712894.

It is a cyclic number.

It is not a de Polignac number, because 49821783 - 2¹⁸ = 49559639 is a prime.

It is a super-2 number, since 2×49821783² = 4964420122598178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49821787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10848 + ... + 14741.

It is an arithmetic number, because the mean of its divisors is an integer number (4606200).

Almost surely, 2^49821783 is an apocalyptic number.

49821783 is a deficient number, since it is larger than the sum of its proper divisors (23877417).

49821783 is a wasteful number, since it uses less digits than its factorization.

49821783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25662.

The product of its digits is 96768, while the sum is 42.

The square root of 49821783 is about 7058.4547175710. The cubic root of 49821783 is about 367.9649240946.

Subtracting from 49821783 its reverse (38712894), we obtain a square (11108889 = 3333²).

The spelling of 49821783 in words is "forty-nine million, eight hundred twenty-one thousand, seven hundred eighty-three".