655145423 has 2 divisors, whose sum is σ = 655145424. Its totient is φ = 655145422.

The previous prime is 655145399. The next prime is 655145431. The reversal of 655145423 is 324541556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655145423 - 2¹⁴ = 655129039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655145443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327572711 + 327572712.

It is an arithmetic number, because the mean of its divisors is an integer number (327572712).

Almost surely, 2^655145423 is an apocalyptic number.

655145423 is a deficient number, since it is larger than the sum of its proper divisors (1).

655145423 is an equidigital number, since it uses as much as digits as its factorization.

655145423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 35.

The square root of 655145423 is about 25595.8086998633. The cubic root of 655145423 is about 868.5188268988.

Adding to 655145423 its reverse (324541556), we get a palindrome (979686979).

The spelling of 655145423 in words is "six hundred fifty-five million, one hundred forty-five thousand, four hundred twenty-three".