49317561 has 36 divisors (see below), whose sum is σ = 77074192. Its totient is φ = 30374784.

The previous prime is 49317551. The next prime is 49317577. The reversal of 49317561 is 16571394.

49317561 is a `hidden beast` number, since 4 + 93 + 1 + 7 + 561 = 666.

49317561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49317561 - 2¹⁵ = 49284793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49317551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 174126 + ... + 174408.

Almost surely, 2^49317561 is an apocalyptic number.

It is an amenable number.

49317561 is a deficient number, since it is larger than the sum of its proper divisors (27756631).

49317561 is a wasteful number, since it uses less digits than its factorization.

49317561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 370 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 49317561 is about 7022.6462960910. The cubic root of 49317561 is about 366.7193814935.

The spelling of 49317561 in words is "forty-nine million, three hundred seventeen thousand, five hundred sixty-one".