61105103 has 4 divisors (see below), whose sum is σ = 62106888. Its totient is φ = 60103320.

The previous prime is 61105087. The next prime is 61105127. The reversal of 61105103 is 30150116.

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

It is a cyclic number.

It is not a de Polignac number, because 61105103 - 2⁴ = 61105087 is a prime.

It is a super-2 number, since 2×61105103² = 7467667225281218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61105153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500801 + ... + 500922.

It is an arithmetic number, because the mean of its divisors is an integer number (15526722).

Almost surely, 2^61105103 is an apocalyptic number.

61105103 is a deficient number, since it is larger than the sum of its proper divisors (1001785).

61105103 is a wasteful number, since it uses less digits than its factorization.

61105103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001784.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 61105103 is about 7816.9753101823. The cubic root of 61105103 is about 393.8756747404.

Adding to 61105103 its reverse (30150116), we get a palindrome (91255219).

The spelling of 61105103 in words is "sixty-one million, one hundred five thousand, one hundred three".