1616255 has 4 divisors (see below), whose sum is σ = 1939512. Its totient is φ = 1293000.

The previous prime is 1616231. The next prime is 1616269. The reversal of 1616255 is 5526161.

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

It is not a de Polignac number, because 1616255 - 2¹⁰ = 1615231 is a prime.

It is a super-2 number, since 2×1616255² = 5224560450050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 161621 + ... + 161630.

It is an arithmetic number, because the mean of its divisors is an integer number (484878).

2^1616255 is an apocalyptic number.

1616255 is a deficient number, since it is larger than the sum of its proper divisors (323257).

1616255 is an equidigital number, since it uses as much as digits as its factorization.

1616255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323256.

The product of its digits is 1800, while the sum is 26.

The square root of 1616255 is about 1271.3201799704. The cubic root of 1616255 is about 117.3554583005.

The spelling of 1616255 in words is "one million, six hundred sixteen thousand, two hundred fifty-five".