1253545 has 4 divisors (see below), whose sum is σ = 1504260. Its totient is φ = 1002832.

The previous prime is 1253521. The next prime is 1253557. The reversal of 1253545 is 5453521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 769129 + 484416 = 877^2 + 696^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253545 - 2⁵ = 1253513 is a prime.

1253545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125350 + ... + 125359.

It is an arithmetic number, because the mean of its divisors is an integer number (376065).

2^1253545 is an apocalyptic number.

It is an amenable number.

1253545 is a deficient number, since it is larger than the sum of its proper divisors (250715).

1253545 is an equidigital number, since it uses as much as digits as its factorization.

1253545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250714.

The product of its digits is 3000, while the sum is 25.

The square root of 1253545 is about 1119.6182385081. The cubic root of 1253545 is about 107.8234713333.

The spelling of 1253545 in words is "one million, two hundred fifty-three thousand, five hundred forty-five".