1253556 has 60 divisors (see below), whose sum is σ = 3384612. Its totient is φ = 404352.

The previous prime is 1253521. The next prime is 1253557. The reversal of 1253556 is 6553521.

1253556 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 810000 + 443556 = 900^2 + 666^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253557) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17136 + ... + 17208.

2^1253556 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 1253556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692306).

1253556 is an abundant number, since it is smaller than the sum of its proper divisors (2131056).

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

1253556 is a wasteful number, since it uses less digits than its factorization.

1253556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 131 counting only the distinct ones).

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

The square root of 1253556 is about 1119.6231508860. The cubic root of 1253556 is about 107.8237867201.

The spelling of 1253556 in words is "one million, two hundred fifty-three thousand, five hundred fifty-six".