61113505 has 16 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 47481408.

The previous prime is 61113491. The next prime is 61113509. The reversal of 61113505 is 50531116.

It is a cyclic number.

It is not a de Polignac number, because 61113505 - 2⁵ = 61113473 is a prime.

61113505 is a Rhonda number in base 16.

It is not an unprimeable number, because it can be changed into a prime (61113509) 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, 26176 + ... + 28414.

It is an arithmetic number, because the mean of its divisors is an integer number (4717440).

Almost surely, 2^61113505 is an apocalyptic number.

It is an amenable number.

61113505 is a deficient number, since it is larger than the sum of its proper divisors (14365535).

61113505 is a wasteful number, since it uses less digits than its factorization.

61113505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 61113505 is about 7817.5127118541. The cubic root of 61113505 is about 393.8937266520.

The spelling of 61113505 in words is "sixty-one million, one hundred thirteen thousand, five hundred five".