61122505 has 4 divisors (see below), whose sum is σ = 73347012. Its totient is φ = 48898000.

The previous prime is 61122499. The next prime is 61122527. The reversal of 61122505 is 50522116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32478601 + 28643904 = 5699^2 + 5352^2 .

It is not a de Polignac number, because 61122505 - 2¹⁵ = 61089737 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6112246 + ... + 6112255.

It is an arithmetic number, because the mean of its divisors is an integer number (18336753).

Almost surely, 2^61122505 is an apocalyptic number.

It is an amenable number.

61122505 is a deficient number, since it is larger than the sum of its proper divisors (12224507).

61122505 is a wasteful number, since it uses less digits than its factorization.

61122505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12224506.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 61122505 is about 7818.0883213225. The cubic root of 61122505 is about 393.9130615466.

The spelling of 61122505 in words is "sixty-one million, one hundred twenty-two thousand, five hundred five".