653542427 has 2 divisors, whose sum is σ = 653542428. Its totient is φ = 653542426.

The previous prime is 653542343. The next prime is 653542453. The reversal of 653542427 is 724245356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653542427 - 2²⁰ = 652493851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (653542457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326771213 + 326771214.

It is an arithmetic number, because the mean of its divisors is an integer number (326771214).

Almost surely, 2^653542427 is an apocalyptic number.

653542427 is a deficient number, since it is larger than the sum of its proper divisors (1).

653542427 is an equidigital number, since it uses as much as digits as its factorization.

653542427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 38.

The square root of 653542427 is about 25564.4758796264. The cubic root of 653542427 is about 867.8098905327.

The spelling of 653542427 in words is "six hundred fifty-three million, five hundred forty-two thousand, four hundred twenty-seven".