5645006261 has 2 divisors, whose sum is σ = 5645006262. Its totient is φ = 5645006260.

The previous prime is 5645006231. The next prime is 5645006317. The reversal of 5645006261 is 1626005465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5399457361 + 245548900 = 73481^2 + 15670^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645006261 - 2¹⁴ = 5644989877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5645006231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822503130 + 2822503131.

It is an arithmetic number, because the mean of its divisors is an integer number (2822503131).

Almost surely, 2^5645006261 is an apocalyptic number.

It is an amenable number.

5645006261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645006261 is an equidigital number, since it uses as much as digits as its factorization.

5645006261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 5645006261 is about 75133.2566910286. The cubic root of 5645006261 is about 1780.5526059565.

The spelling of 5645006261 in words is "five billion, six hundred forty-five million, six thousand, two hundred sixty-one".