1655279 has 2 divisors, whose sum is σ = 1655280. Its totient is φ = 1655278.

The previous prime is 1655263. The next prime is 1655281. The reversal of 1655279 is 9725561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1655279 - 2⁴ = 1655263 is a prime.

Together with 1655281, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827639 + 827640.

It is an arithmetic number, because the mean of its divisors is an integer number (827640).

2^1655279 is an apocalyptic number.

1655279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655279 is an equidigital number, since it uses as much as digits as its factorization.

1655279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 1655279 is about 1286.5764648866. The cubic root of 1655279 is about 118.2924613634.

The spelling of 1655279 in words is "one million, six hundred fifty-five thousand, two hundred seventy-nine".