2209261553 has 2 divisors, whose sum is σ = 2209261554. Its totient is φ = 2209261552.

The previous prime is 2209261529. The next prime is 2209261603. The reversal of 2209261553 is 3551629022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2202143329 + 7118224 = 46927^2 + 2668^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209261553 - 2²⁶ = 2142152689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2209261253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104630776 + 1104630777.

It is an arithmetic number, because the mean of its divisors is an integer number (1104630777).

Almost surely, 2^2209261553 is an apocalyptic number.

It is an amenable number.

2209261553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209261553 is an equidigital number, since it uses as much as digits as its factorization.

2209261553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2209261553 is about 47002.7823963646. The cubic root of 2209261553 is about 1302.4139670040.

The spelling of 2209261553 in words is "two billion, two hundred nine million, two hundred sixty-one thousand, five hundred fifty-three".