1555264 has 28 divisors (see below), whose sum is σ = 3251200. Its totient is φ = 736128.

The previous prime is 1555261. The next prime is 1555289. The reversal of 1555264 is 4625551.

It is a super-2 number, since 2×1555264² = 4837692219392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577 + ... + 1855.

2^1555264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1555264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625600).

1555264 is an abundant number, since it is smaller than the sum of its proper divisors (1695936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555264 is a wasteful number, since it uses less digits than its factorization.

1555264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1300 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 1555264 is about 1247.1022411976. The cubic root of 1555264 is about 115.8603154138.

The spelling of 1555264 in words is "one million, five hundred fifty-five thousand, two hundred sixty-four".