1553256 has 96 divisors (see below), whose sum is σ = 4717440. Its totient is φ = 476928.

The previous prime is 1553249. The next prime is 1553281. The reversal of 1553256 is 6523551.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33025 + ... + 33071.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2^1553256 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 1553256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2358720).

1553256 is an abundant number, since it is smaller than the sum of its proper divisors (3164184).

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

1553256 is a wasteful number, since it uses less digits than its factorization.

1553256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 69 counting only the distinct ones).

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

The square root of 1553256 is about 1246.2969148642. The cubic root of 1553256 is about 115.8104315551.

The spelling of 1553256 in words is "one million, five hundred fifty-three thousand, two hundred fifty-six".