61380903 has 4 divisors (see below), whose sum is σ = 81841208. Its totient is φ = 40920600.

The previous prime is 61380889. The next prime is 61380923. The reversal of 61380903 is 30908316.

61380903 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 not a de Polignac number, because 61380903 - 2⁸ = 61380647 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 (61380923) 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, 10230148 + ... + 10230153.

It is an arithmetic number, because the mean of its divisors is an integer number (20460302).

Almost surely, 2^61380903 is an apocalyptic number.

61380903 is a deficient number, since it is larger than the sum of its proper divisors (20460305).

61380903 is a wasteful number, since it uses less digits than its factorization.

61380903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20460304.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 61380903 is about 7834.5965435369. The cubic root of 61380903 is about 394.4673759127.

The spelling of 61380903 in words is "sixty-one million, three hundred eighty thousand, nine hundred three".