61117219 has 4 divisors (see below), whose sum is σ = 61335000. Its totient is φ = 60899440.

The previous prime is 61117171. The next prime is 61117241. The reversal of 61117219 is 91271116.

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

It is a cyclic number.

It is not a de Polignac number, because 61117219 - 2²¹ = 59020067 is a prime.

It is a super-2 number, since 2×61117219² = 7470628916587922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61118219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108469 + ... + 109030.

It is an arithmetic number, because the mean of its divisors is an integer number (15333750).

Almost surely, 2^61117219 is an apocalyptic number.

61117219 is a deficient number, since it is larger than the sum of its proper divisors (217781).

61117219 is a wasteful number, since it uses less digits than its factorization.

61117219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217780.

The product of its digits is 756, while the sum is 28.

The square root of 61117219 is about 7817.7502518308. The cubic root of 61117219 is about 393.9017057486.

The spelling of 61117219 in words is "sixty-one million, one hundred seventeen thousand, two hundred nineteen".