61103 has 12 divisors (see below), whose sum is σ = 75240. Its totient is φ = 49392.

The previous prime is 61099. The next prime is 61121. The reversal of 61103 is 30116.

It is not a de Polignac number, because 61103 - 2² = 61099 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 (61153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1400 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (6270).

2⁶¹¹⁰³ is an apocalyptic number.

61103 is a deficient number, since it is larger than the sum of its proper divisors (14137).

61103 is a wasteful number, since it uses less digits than its factorization.

61103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 61103 is about 247.1902101621. The cubic root of 61103 is about 39.3871156132.

Adding to 61103 its reverse (30116), we get a palindrome (91219).

The spelling of 61103 in words is "sixty-one thousand, one hundred three".