61105902 has 64 divisors (see below), whose sum is σ = 144668160. Its totient is φ = 16963200.

The previous prime is 61105897. The next prime is 61105921. The reversal of 61105902 is 20950116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196327 + ... + 196637.

It is an arithmetic number, because the mean of its divisors is an integer number (2260440).

Almost surely, 2^61105902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61105902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72334080).

61105902 is an abundant number, since it is smaller than the sum of its proper divisors (83562258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61105902 is a wasteful number, since it uses less digits than its factorization.

61105902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 61105902 is about 7817.0264167393. The cubic root of 61105902 is about 393.8773914835.

The spelling of 61105902 in words is "sixty-one million, one hundred five thousand, nine hundred two".