49769561 has 4 divisors (see below), whose sum is σ = 49783824. Its totient is φ = 49755300.

The previous prime is 49769519. The next prime is 49769581. The reversal of 49769561 is 16596794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 49769561 - 2¹⁴ = 49753177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49769501) 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, 2006 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (12445956).

Almost surely, 2^49769561 is an apocalyptic number.

It is an amenable number.

49769561 is a deficient number, since it is larger than the sum of its proper divisors (14263).

49769561 is an equidigital number, since it uses as much as digits as its factorization.

49769561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14262.

The product of its digits is 408240, while the sum is 47.

The square root of 49769561 is about 7054.7544960828. The cubic root of 49769561 is about 367.8363151416.

The spelling of 49769561 in words is "forty-nine million, seven hundred sixty-nine thousand, five hundred sixty-one".