1553265 has 24 divisors (see below), whose sum is σ = 3077568. Its totient is φ = 709920.

The previous prime is 1553249. The next prime is 1553281. The reversal of 1553265 is 5623551.

It is an interprime number because it is at equal distance from previous prime (1553249) and next prime (1553281).

It is not a de Polignac number, because 1553265 - 2⁴ = 1553249 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 2151 + ... + 2780.

It is an arithmetic number, because the mean of its divisors is an integer number (128232).

2^1553265 is an apocalyptic number.

1553265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1553265 is a deficient number, since it is larger than the sum of its proper divisors (1524303).

1553265 is a wasteful number, since it uses less digits than its factorization.

1553265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949 (or 4946 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 1553265 is about 1246.3005255555. The cubic root of 1553265 is about 115.8106552340.

The spelling of 1553265 in words is "one million, five hundred fifty-three thousand, two hundred sixty-five".