3156226561 has 2 divisors, whose sum is σ = 3156226562. Its totient is φ = 3156226560.

The previous prime is 3156226537. The next prime is 3156226573. The reversal of 3156226561 is 1656226513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2772654336 + 383572225 = 52656^2 + 19585^2 .

It is a cyclic number.

It is not a de Polignac number, because 3156226561 - 2¹³ = 3156218369 is a prime.

It is a super-2 number, since 2×3156226561² = 19923532208723773442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3156226561.

It is not a weakly prime, because it can be changed into another prime (3156256561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1578113280 + 1578113281.

It is an arithmetic number, because the mean of its divisors is an integer number (1578113281).

Almost surely, 2^3156226561 is an apocalyptic number.

It is an amenable number.

3156226561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3156226561 is an equidigital number, since it uses as much as digits as its factorization.

3156226561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 3156226561 is about 56180.3040308612. The cubic root of 3156226561 is about 1466.8624460127.

The spelling of 3156226561 in words is "three billion, one hundred fifty-six million, two hundred twenty-six thousand, five hundred sixty-one".