61611103 has 4 divisors (see below), whose sum is σ = 62156448. Its totient is φ = 61065760.

The previous prime is 61611101. The next prime is 61611113. The reversal of 61611103 is 30111616.

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 61611103 - 2¹ = 61611101 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 (61611101) 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, 272503 + ... + 272728.

It is an arithmetic number, because the mean of its divisors is an integer number (15539112).

Almost surely, 2^61611103 is an apocalyptic number.

61611103 is a deficient number, since it is larger than the sum of its proper divisors (545345).

61611103 is a wasteful number, since it uses less digits than its factorization.

61611103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545344.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 61611103 is about 7849.2740428654. The cubic root of 61611103 is about 394.9598912434.

Adding to 61611103 its reverse (30111616), we get a palindrome (91722719).

The spelling of 61611103 in words is "sixty-one million, six hundred eleven thousand, one hundred three".