1253045 has 8 divisors (see below), whose sum is σ = 1524696. Its totient is φ = 988416.

The previous prime is 1253027. The next prime is 1253047. The reversal of 1253045 is 5403521.

1253045 = 10² + 11² + ... + 155².

It can be written as a sum of positive squares in 4 ways, for example, as 88804 + 1164241 = 298^2 + 1079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253045 - 2¹⁰ = 1252021 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (190587).

2^1253045 is an apocalyptic number.

It is an amenable number.

1253045 is a deficient number, since it is larger than the sum of its proper divisors (271651).

1253045 is an equidigital number, since it uses as much as digits as its factorization.

1253045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1253045 is about 1119.3949258416. The cubic root of 1253045 is about 107.8091336203.

Adding to 1253045 its reverse (5403521), we get a palindrome (6656566).

The spelling of 1253045 in words is "one million, two hundred fifty-three thousand, forty-five".