61105506 has 32 divisors (see below), whose sum is σ = 152368128. Its totient is φ = 15871440.

The previous prime is 61105493. The next prime is 61105507. The reversal of 61105506 is 60550116.

It is not an unprimeable number, because it can be changed into a prime (61105507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65670 + ... + 66593.

It is an arithmetic number, because the mean of its divisors is an integer number (4761504).

Almost surely, 2^61105506 is an apocalyptic number.

61105506 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61105506 is an abundant number, since it is smaller than the sum of its proper divisors (91262622).

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

61105506 is a wasteful number, since it uses less digits than its factorization.

61105506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132286.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 61105506 is about 7817.0010873736. The cubic root of 61105506 is about 393.8765406340.

The spelling of 61105506 in words is "sixty-one million, one hundred five thousand, five hundred six".