654255531 has 12 divisors (see below), whose sum is σ = 948378808. Its totient is φ = 434627424.

The previous prime is 654255521. The next prime is 654255533. The reversal of 654255531 is 135552456.

654255531 is a `hidden beast` number, since 65 + 42 + 5 + 553 + 1 = 666.

It is not a de Polignac number, because 654255531 - 2⁵ = 654255499 is a prime.

It is a super-5 number, since 5×654255531⁵ (a number of 45 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654255533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125890 + ... + 130983.

Almost surely, 2^654255531 is an apocalyptic number.

654255531 is a deficient number, since it is larger than the sum of its proper divisors (294123277).

654255531 is a wasteful number, since it uses less digits than its factorization.

654255531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257162 (or 257159 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 654255531 is about 25578.4192435733. The cubic root of 654255531 is about 868.1254088198.

The spelling of 654255531 in words is "six hundred fifty-four million, two hundred fifty-five thousand, five hundred thirty-one".