655144261 has 2 divisors, whose sum is σ = 655144262. Its totient is φ = 655144260.

The previous prime is 655144247. The next prime is 655144313. The reversal of 655144261 is 162441556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542657025 + 112487236 = 23295^2 + 10606^2 .

It is a cyclic number.

It is not a de Polignac number, because 655144261 - 2⁵ = 655144229 is a prime.

It is a super-2 number, since 2×655144261² = 858428005442472242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655144241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327572130 + 327572131.

It is an arithmetic number, because the mean of its divisors is an integer number (327572131).

Almost surely, 2^655144261 is an apocalyptic number.

It is an amenable number.

655144261 is a deficient number, since it is larger than the sum of its proper divisors (1).

655144261 is an equidigital number, since it uses as much as digits as its factorization.

655144261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

The square root of 655144261 is about 25595.7860008244. The cubic root of 655144261 is about 868.5183134151.

The spelling of 655144261 in words is "six hundred fifty-five million, one hundred forty-four thousand, two hundred sixty-one".