2061550217 has 4 divisors (see below), whose sum is σ = 2170052880. Its totient is φ = 1953047556.

The previous prime is 2061550207. The next prime is 2061550219. The reversal of 2061550217 is 7120551602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2061550217 - 2¹² = 2061546121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2061550217.

It is not an unprimeable number, because it can be changed into a prime (2061550219) 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, 54251303 + ... + 54251340.

It is an arithmetic number, because the mean of its divisors is an integer number (542513220).

Almost surely, 2^2061550217 is an apocalyptic number.

It is an amenable number.

2061550217 is a deficient number, since it is larger than the sum of its proper divisors (108502663).

2061550217 is a wasteful number, since it uses less digits than its factorization.

2061550217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108502662.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 2061550217 is about 45404.2973406703. The cubic root of 2061550217 is about 1272.7154202401.

The spelling of 2061550217 in words is "two billion, sixty-one million, five hundred fifty thousand, two hundred seventeen".