1655401255 has 4 divisors (see below), whose sum is σ = 1986481512. Its totient is φ = 1324321000.

The previous prime is 1655401213. The next prime is 1655401261. The reversal of 1655401255 is 5521045561.

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

It is not a de Polignac number, because 1655401255 - 2⁹ = 1655400743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1655401255.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 165540121 + ... + 165540130.

It is an arithmetic number, because the mean of its divisors is an integer number (496620378).

Almost surely, 2^1655401255 is an apocalyptic number.

1655401255 is a deficient number, since it is larger than the sum of its proper divisors (331080257).

1655401255 is an equidigital number, since it uses as much as digits as its factorization.

1655401255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331080256.

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 1655401255 is about 40686.6225558229. The cubic root of 1655401255 is about 1182.9537355906.

The spelling of 1655401255 in words is "one billion, six hundred fifty-five million, four hundred one thousand, two hundred fifty-five".