655001129 has 2 divisors, whose sum is σ = 655001130. Its totient is φ = 655001128.

The previous prime is 655001111. The next prime is 655001131. The reversal of 655001129 is 921100556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 360810025 + 294191104 = 18995^2 + 17152^2 .

It is a cyclic number.

It is not a de Polignac number, because 655001129 - 2²⁰ = 653952553 is a prime.

Together with 655001131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655001159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327500564 + 327500565.

It is an arithmetic number, because the mean of its divisors is an integer number (327500565).

Almost surely, 2^655001129 is an apocalyptic number.

It is an amenable number.

655001129 is a deficient number, since it is larger than the sum of its proper divisors (1).

655001129 is an equidigital number, since it uses as much as digits as its factorization.

655001129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 655001129 is about 25592.9898409701. The cubic root of 655001129 is about 868.4550592461.

The spelling of 655001129 in words is "six hundred fifty-five million, one thousand, one hundred twenty-nine".