655145149 has 2 divisors, whose sum is σ = 655145150. Its totient is φ = 655145148.

The previous prime is 655145123. The next prime is 655145159. The reversal of 655145149 is 941541556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490844025 + 164301124 = 22155^2 + 12818^2 .

It is a cyclic number.

It is not a de Polignac number, because 655145149 - 2¹¹ = 655143101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655145159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327572574 + 327572575.

It is an arithmetic number, because the mean of its divisors is an integer number (327572575).

Almost surely, 2^655145149 is an apocalyptic number.

It is an amenable number.

655145149 is a deficient number, since it is larger than the sum of its proper divisors (1).

655145149 is an equidigital number, since it uses as much as digits as its factorization.

655145149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 40.

The square root of 655145149 is about 25595.8033474240. The cubic root of 655145149 is about 868.5187058192.

The spelling of 655145149 in words is "six hundred fifty-five million, one hundred forty-five thousand, one hundred forty-nine".