61563403 has 4 divisors (see below), whose sum is σ = 67160088. Its totient is φ = 55966720.

The previous prime is 61563379. The next prime is 61563421. The reversal of 61563403 is 30436516.

61563403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61563403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61563473) 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 3 ways as a sum of consecutive naturals, for example, 2798326 + ... + 2798347.

It is an arithmetic number, because the mean of its divisors is an integer number (16790022).

Almost surely, 2^61563403 is an apocalyptic number.

61563403 is a deficient number, since it is larger than the sum of its proper divisors (5596685).

61563403 is a wasteful number, since it uses less digits than its factorization.

61563403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5596684.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 61563403 is about 7846.2349569714. The cubic root of 61563403 is about 394.8579374833.

Adding to 61563403 its reverse (30436516), we get a palindrome (91999919).

It can be divided in two parts, 6156 and 3403, that added together give a palindrome (9559).

The spelling of 61563403 in words is "sixty-one million, five hundred sixty-three thousand, four hundred three".