2217272551 has 16 divisors (see below), whose sum is σ = 2468343808. Its totient is φ = 1977890400.

The previous prime is 2217272521. The next prime is 2217272557. The reversal of 2217272551 is 1552727122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2217272551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217272557) 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, 313666 + ... + 320656.

It is an arithmetic number, because the mean of its divisors is an integer number (154271488).

Almost surely, 2^2217272551 is an apocalyptic number.

2217272551 is a deficient number, since it is larger than the sum of its proper divisors (251071257).

2217272551 is a wasteful number, since it uses less digits than its factorization.

2217272551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7822.

The product of its digits is 19600, while the sum is 34.

The square root of 2217272551 is about 47087.9236216676. The cubic root of 2217272551 is about 1303.9862947783.

Adding to 2217272551 its reverse (1552727122), we get a palindrome (3769999673).

The spelling of 2217272551 in words is "two billion, two hundred seventeen million, two hundred seventy-two thousand, five hundred fifty-one".