655901201 has 4 divisors (see below), whose sum is σ = 656042292. Its totient is φ = 655760112.

The previous prime is 655901179. The next prime is 655901237. The reversal of 655901201 is 102109556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 506475025 + 149426176 = 22505^2 + 12224^2 .

It is a cyclic number.

It is not a de Polignac number, because 655901201 - 2⁶ = 655901137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655901101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63326 + ... + 72951.

It is an arithmetic number, because the mean of its divisors is an integer number (164010573).

Almost surely, 2^655901201 is an apocalyptic number.

It is an amenable number.

655901201 is a deficient number, since it is larger than the sum of its proper divisors (141091).

655901201 is a wasteful number, since it uses less digits than its factorization.

655901201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141090.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 655901201 is about 25610.5681506678. The cubic root of 655901201 is about 868.8526739854.

The spelling of 655901201 in words is "six hundred fifty-five million, nine hundred one thousand, two hundred one".