1115454421 has 2 divisors, whose sum is σ = 1115454422. Its totient is φ = 1115454420.

The previous prime is 1115454409. The next prime is 1115454433. The reversal of 1115454421 is 1244545111.

It is a balanced prime because it is at equal distance from previous prime (1115454409) and next prime (1115454433).

It can be written as a sum of positive squares in only one way, i.e., 723018321 + 392436100 = 26889^2 + 19810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115454421 - 2⁹ = 1115453909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115454421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115454401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557727210 + 557727211.

It is an arithmetic number, because the mean of its divisors is an integer number (557727211).

Almost surely, 2^1115454421 is an apocalyptic number.

It is an amenable number.

1115454421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115454421 is an equidigital number, since it uses as much as digits as its factorization.

1115454421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 28.

The square root of 1115454421 is about 33398.4194386501. The cubic root of 1115454421 is about 1037.0919813504.

Adding to 1115454421 its reverse (1244545111), we get a palindrome (2359999532).

The spelling of 1115454421 in words is "one billion, one hundred fifteen million, four hundred fifty-four thousand, four hundred twenty-one".