1123251053 has 4 divisors (see below), whose sum is σ = 1123351068. Its totient is φ = 1123151040.

The previous prime is 1123251049. The next prime is 1123251071. The reversal of 1123251053 is 3501523211.

It is a happy number.

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: 3501523211 = 4721 ⋅741691.

It can be written as a sum of positive squares in 2 ways, for example, as 820421449 + 302829604 = 28643^2 + 17402^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123251053 - 2² = 1123251049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123251043) 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, 30668 + ... + 56453.

It is an arithmetic number, because the mean of its divisors is an integer number (280837767).

Almost surely, 2^1123251053 is an apocalyptic number.

It is an amenable number.

1123251053 is a deficient number, since it is larger than the sum of its proper divisors (100015).

1123251053 is an equidigital number, since it uses as much as digits as its factorization.

1123251053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100014.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1123251053 is about 33514.9377591545. The cubic root of 1123251053 is about 1039.5026754956.

Adding to 1123251053 its reverse (3501523211), we get a palindrome (4624774264).

The spelling of 1123251053 in words is "one billion, one hundred twenty-three million, two hundred fifty-one thousand, fifty-three".