1272553 has 4 divisors (see below), whose sum is σ = 1278340. Its totient is φ = 1266768.

The previous prime is 1272547. The next prime is 1272559. The reversal of 1272553 is 3552721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3552721 = 107 ⋅33203.

It is an interprime number because it is at equal distance from previous prime (1272547) and next prime (1272559).

It can be written as a sum of positive squares in 2 ways, for example, as 1192464 + 80089 = 1092^2 + 283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272553 is a prime.

It is a super-2 number, since 2×1272553² = 3238782275618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550 + ... + 3007.

It is an arithmetic number, because the mean of its divisors is an integer number (319585).

2^1272553 is an apocalyptic number.

It is an amenable number.

1272553 is a deficient number, since it is larger than the sum of its proper divisors (5787).

1272553 is an equidigital number, since it uses as much as digits as its factorization.

1272553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5786.

The product of its digits is 2100, while the sum is 25.

The square root of 1272553 is about 1128.0749088602. The cubic root of 1272553 is about 108.3657296931.

The spelling of 1272553 in words is "one million, two hundred seventy-two thousand, five hundred fifty-three".