61440353 has 4 divisors (see below), whose sum is σ = 66166548. Its totient is φ = 56714160.

The previous prime is 61440331. The next prime is 61440361. The reversal of 61440353 is 35304416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31047184 + 30393169 = 5572^2 + 5513^2 .

It is a cyclic number.

It is not a de Polignac number, because 61440353 - 2⁶ = 61440289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61445353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363078 + ... + 2363103.

It is an arithmetic number, because the mean of its divisors is an integer number (16541637).

Almost surely, 2^61440353 is an apocalyptic number.

It is an amenable number.

61440353 is a deficient number, since it is larger than the sum of its proper divisors (4726195).

61440353 is a wasteful number, since it uses less digits than its factorization.

61440353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726194.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 61440353 is about 7838.3896943186. The cubic root of 61440353 is about 394.5946875970.

Adding to 61440353 its reverse (35304416), we get a palindrome (96744769).

The spelling of 61440353 in words is "sixty-one million, four hundred forty thousand, three hundred fifty-three".