1253155 has 16 divisors (see below), whose sum is σ = 1664064. Its totient is φ = 901120.

The previous prime is 1253137. The next prime is 1253167. The reversal of 1253155 is 5513521.

It is not a de Polignac number, because 1253155 - 2⁷ = 1253027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1635 + ... + 2275.

It is an arithmetic number, because the mean of its divisors is an integer number (104004).

2^1253155 is an apocalyptic number.

1253155 is a deficient number, since it is larger than the sum of its proper divisors (410909).

1253155 is a wasteful number, since it uses less digits than its factorization.

1253155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686.

The product of its digits is 750, while the sum is 22.

The square root of 1253155 is about 1119.4440584504. Note that the first 3 decimals coincide. The cubic root of 1253155 is about 107.8122882444.

Adding to 1253155 its reverse (5513521), we get a palindrome (6766676).

The spelling of 1253155 in words is "one million, two hundred fifty-three thousand, one hundred fifty-five".