1253081 has 4 divisors (see below), whose sum is σ = 1255332. Its totient is φ = 1250832.

The previous prime is 1253071. The next prime is 1253089. The reversal of 1253081 is 1803521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1803521 = 97 ⋅18593.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 912025 = 584^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253081 - 2¹⁰ = 1252057 is a prime.

It is a super-2 number, since 2×1253081² = 3140423985122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253089) 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, 395 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (313833).

2^1253081 is an apocalyptic number.

It is an amenable number.

1253081 is a deficient number, since it is larger than the sum of its proper divisors (2251).

1253081 is a wasteful number, since it uses less digits than its factorization.

1253081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1253081 is about 1119.4110058419. The cubic root of 1253081 is about 107.8101660630.

The spelling of 1253081 in words is "one million, two hundred fifty-three thousand, eighty-one".