655276401 has 48 divisors (see below), whose sum is σ = 1053030160. Its totient is φ = 390044160.

The previous prime is 655276399. The next prime is 655276469. The reversal of 655276401 is 104672556.

It is a happy number.

655276401 is a `hidden beast` number, since 6 + 5 + 5 + 2 + 7 + 640 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 123743376 + 531533025 = 11124^2 + 23055^2 .

It is not a de Polignac number, because 655276401 - 2¹ = 655276399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655276001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 991011 + ... + 991671.

Almost surely, 2^655276401 is an apocalyptic number.

It is an amenable number.

655276401 is a deficient number, since it is larger than the sum of its proper divisors (397753759).

655276401 is a wasteful number, since it uses less digits than its factorization.

655276401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 655276401 is about 25598.3671549574. The cubic root of 655276401 is about 868.5767017231.

The spelling of 655276401 in words is "six hundred fifty-five million, two hundred seventy-six thousand, four hundred one".