61449513 has 16 divisors (see below), whose sum is σ = 83466240. Its totient is φ = 40207104.

The previous prime is 61449481. The next prime is 61449517. The reversal of 61449513 is 31594416.

61449513 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 61449513 - 2⁵ = 61449481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61449517) 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 15 ways as a sum of consecutive naturals, for example, 36120 + ... + 37782.

It is an arithmetic number, because the mean of its divisors is an integer number (5216640).

Almost surely, 2^61449513 is an apocalyptic number.

It is an amenable number.

61449513 is a deficient number, since it is larger than the sum of its proper divisors (22016727).

61449513 is a wasteful number, since it uses less digits than its factorization.

61449513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888.

The product of its digits is 12960, while the sum is 33.

The square root of 61449513 is about 7838.9739762293. The cubic root of 61449513 is about 394.6142963588.

The spelling of 61449513 in words is "sixty-one million, four hundred forty-nine thousand, five hundred thirteen".