1011250553 has 4 divisors (see below), whose sum is σ = 1011991680. Its totient is φ = 1010509428.

The previous prime is 1011250529. The next prime is 1011250607. The reversal of 1011250553 is 3550521101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011250553 - 2²⁸ = 742815097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011250753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368513 + ... + 371246.

It is an arithmetic number, because the mean of its divisors is an integer number (252997920).

Almost surely, 2^1011250553 is an apocalyptic number.

It is an amenable number.

1011250553 is a deficient number, since it is larger than the sum of its proper divisors (741127).

1011250553 is an equidigital number, since it uses as much as digits as its factorization.

1011250553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741126.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1011250553 is about 31800.1659272401. The cubic root of 1011250553 is about 1003.7362077005.

Adding to 1011250553 its reverse (3550521101), we get a palindrome (4561771654).

The spelling of 1011250553 in words is "one billion, eleven million, two hundred fifty thousand, five hundred fifty-three".