49791521 has 24 divisors (see below), whose sum is σ = 59054520. Its totient is φ = 41674752.

The previous prime is 49791517. The next prime is 49791557. The reversal of 49791521 is 12519794.

49791521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 286225 + 49505296 = 535^2 + 7036^2 .

It is not a de Polignac number, because 49791521 - 2² = 49791517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49791421) 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 23 ways as a sum of consecutive naturals, for example, 108725 + ... + 109181.

It is an arithmetic number, because the mean of its divisors is an integer number (2460605).

Almost surely, 2^49791521 is an apocalyptic number.

It is an amenable number.

49791521 is a deficient number, since it is larger than the sum of its proper divisors (9262999).

49791521 is a wasteful number, since it uses less digits than its factorization.

49791521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 516 counting only the distinct ones).

The product of its digits is 22680, while the sum is 38.

The square root of 49791521 is about 7056.3107216165. The cubic root of 49791521 is about 367.8904077607.

The spelling of 49791521 in words is "forty-nine million, seven hundred ninety-one thousand, five hundred twenty-one".