655322531 has 2 divisors, whose sum is σ = 655322532. Its totient is φ = 655322530.

The previous prime is 655322527. The next prime is 655322543. The reversal of 655322531 is 135223556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655322531 - 2² = 655322527 is a prime.

It is a super-2 number, since 2×655322531² = 858895239272491922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655322231) 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, 327661265 + 327661266.

It is an arithmetic number, because the mean of its divisors is an integer number (327661266).

Almost surely, 2^655322531 is an apocalyptic number.

655322531 is a deficient number, since it is larger than the sum of its proper divisors (1).

655322531 is an equidigital number, since it uses as much as digits as its factorization.

655322531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 32.

The square root of 655322531 is about 25599.2681731334. The cubic root of 655322531 is about 868.5970832003.

The spelling of 655322531 in words is "six hundred fifty-five million, three hundred twenty-two thousand, five hundred thirty-one".