61162217 has 4 divisors (see below), whose sum is σ = 61316676. Its totient is φ = 61007760.

The previous prime is 61162187. The next prime is 61162259. The reversal of 61162217 is 71226116.

61162217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38987536 + 22174681 = 6244^2 + 4709^2 .

It is a cyclic number.

It is not a de Polignac number, because 61162217 - 2¹⁰ = 61161193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61162117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76634 + ... + 77427.

It is an arithmetic number, because the mean of its divisors is an integer number (15329169).

Almost surely, 2^61162217 is an apocalyptic number.

It is an amenable number.

61162217 is a deficient number, since it is larger than the sum of its proper divisors (154459).

61162217 is a wasteful number, since it uses less digits than its factorization.

61162217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154458.

The product of its digits is 1008, while the sum is 26.

The square root of 61162217 is about 7820.6276602329. The cubic root of 61162217 is about 393.9983530384.

The spelling of 61162217 in words is "sixty-one million, one hundred sixty-two thousand, two hundred seventeen".