61105403 has 2 divisors, whose sum is σ = 61105404. Its totient is φ = 61105402.

The previous prime is 61105399. The next prime is 61105423. The reversal of 61105403 is 30450116.

It is an a-pointer prime, because the next prime (61105423) can be obtained adding 61105403 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61105403 - 2² = 61105399 is a prime.

It is not a weakly prime, because it can be changed into another prime (61105423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552701 + 30552702.

It is an arithmetic number, because the mean of its divisors is an integer number (30552702).

Almost surely, 2^61105403 is an apocalyptic number.

61105403 is a deficient number, since it is larger than the sum of its proper divisors (1).

61105403 is an equidigital number, since it uses as much as digits as its factorization.

61105403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 61105403 is about 7816.9944991665. The cubic root of 61105403 is about 393.8763193266.

Adding to 61105403 its reverse (30450116), we get a palindrome (91555519).

The spelling of 61105403 in words is "sixty-one million, one hundred five thousand, four hundred three".