655502001 has 32 divisors (see below), whose sum is σ = 1137051648. Its totient is φ = 325712640.

The previous prime is 655501961. The next prime is 655502021. The reversal of 655502001 is 100205556.

It is not a de Polignac number, because 655502001 - 2¹⁵ = 655469233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (655502021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56376 + ... + 67001.

It is an arithmetic number, because the mean of its divisors is an integer number (35532864).

Almost surely, 2^655502001 is an apocalyptic number.

It is an amenable number.

655502001 is a deficient number, since it is larger than the sum of its proper divisors (481549647).

655502001 is a wasteful number, since it uses less digits than its factorization.

655502001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123421.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 655502001 is about 25602.7733068119. The cubic root of 655502001 is about 868.6763687850.

Adding to 655502001 its reverse (100205556), we get a palindrome (755707557).

The spelling of 655502001 in words is "six hundred fifty-five million, five hundred two thousand, one".