2947295521 has 5 divisors (see below), whose sum is σ = 2959999381. Its totient is φ = 2934646184.

The previous prime is 2947295513. The next prime is 2947295539. The reversal of 2947295521 is 1255927492.

The square root of 2947295521 is 54289.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1039353121 + 1907942400 = 32239^2 + 43680^2 .

It is not a de Polignac number, because 2947295521 - 2³ = 2947295513 is a prime.

It is a super-2 number, since 2×2947295521² = 17373101776213322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2947295621) by changing a digit.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 12649221 + ... + 12649453.

Almost surely, 2^2947295521 is an apocalyptic number.

2947295521 is the 54289-th square number.

2947295521 is the 27145-th centered octagonal number.

It is an amenable number.

2947295521 is a deficient number, since it is larger than the sum of its proper divisors (12703860).

2947295521 is an frugal number, since it uses more digits than its factorization.

2947295521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 233 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The cubic root of 2947295521 is about 1433.7537320236.

The spelling of 2947295521 in words is "two billion, nine hundred forty-seven million, two hundred ninety-five thousand, five hundred twenty-one".