2956297221 has 6 divisors (see below), whose sum is σ = 4270207110. Its totient is φ = 1970864808.

The previous prime is 2956297199. The next prime is 2956297271. The reversal of 2956297221 is 1227926592.

It can be written as a sum of positive squares in only one way, i.e., 2904024321 + 52272900 = 53889^2 + 7230^2 .

It is not a de Polignac number, because 2956297221 - 2⁵ = 2956297189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2956297271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164238726 + ... + 164238743.

It is an arithmetic number, because the mean of its divisors is an integer number (711701185).

Almost surely, 2^2956297221 is an apocalyptic number.

It is an amenable number.

2956297221 is a deficient number, since it is larger than the sum of its proper divisors (1313909889).

2956297221 is a wasteful number, since it uses less digits than its factorization.

2956297221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328477475 (or 328477472 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 2956297221 is about 54371.8421703734. The cubic root of 2956297221 is about 1435.2119167257.

The spelling of 2956297221 in words is "two billion, nine hundred fifty-six million, two hundred ninety-seven thousand, two hundred twenty-one".