61103005 has 4 divisors (see below), whose sum is σ = 73323612. Its totient is φ = 48882400.

The previous prime is 61102897. The next prime is 61103017. The reversal of 61103005 is 50030116.

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 41229241 + 19873764 = 6421^2 + 4458^2 .

It is not a de Polignac number, because 61103005 - 2⁹ = 61102493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61103005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6110296 + ... + 6110305.

It is an arithmetic number, because the mean of its divisors is an integer number (18330903).

Almost surely, 2^61103005 is an apocalyptic number.

It is an amenable number.

61103005 is a deficient number, since it is larger than the sum of its proper divisors (12220607).

61103005 is a wasteful number, since it uses less digits than its factorization.

61103005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12220606.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 61103005 is about 7816.8411139027. The cubic root of 61103005 is about 393.8711668757.

It can be divided in two parts, 6 and 1103005, that added together give a palindrome (1103011).

The spelling of 61103005 in words is "sixty-one million, one hundred three thousand, five".