655054019 has 2 divisors, whose sum is σ = 655054020. Its totient is φ = 655054018.

The previous prime is 655054009. The next prime is 655054033. The reversal of 655054019 is 910450556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655054019 - 2⁴ = 655054003 is a prime.

It is a super-2 number, since 2×655054019² = 858191535616104722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655054019.

It is not a weakly prime, because it can be changed into another prime (655054009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327527009 + 327527010.

It is an arithmetic number, because the mean of its divisors is an integer number (327527010).

Almost surely, 2^655054019 is an apocalyptic number.

655054019 is a deficient number, since it is larger than the sum of its proper divisors (1).

655054019 is an equidigital number, since it uses as much as digits as its factorization.

655054019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 655054019 is about 25594.0231108749. The cubic root of 655054019 is about 868.4784339395.

The spelling of 655054019 in words is "six hundred fifty-five million, fifty-four thousand, nineteen".