2572221651 has 8 divisors (see below), whose sum is σ = 3435066624. Its totient is φ = 1712095560.

The previous prime is 2572221647. The next prime is 2572221667. The reversal of 2572221651 is 1561222752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2572221651 - 2² = 2572221647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2572201651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677511 + ... + 681296.

It is an arithmetic number, because the mean of its divisors is an integer number (429383328).

Almost surely, 2^2572221651 is an apocalyptic number.

2572221651 is a deficient number, since it is larger than the sum of its proper divisors (862844973).

2572221651 is a wasteful number, since it uses less digits than its factorization.

2572221651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359441.

The product of its digits is 16800, while the sum is 33.

The square root of 2572221651 is about 50717.0745508847. The cubic root of 2572221651 is about 1370.1542531484.

The spelling of 2572221651 in words is "two billion, five hundred seventy-two million, two hundred twenty-one thousand, six hundred fifty-one".