1055044421 has 6 divisors (see below), whose sum is σ = 1090176966. Its totient is φ = 1021009800.

The previous prime is 1055044411. The next prime is 1055044427. The reversal of 1055044421 is 1244405501.

It can be written as a sum of positive squares in only one way, i.e., 592192225 + 462852196 = 24335^2 + 21514^2 .

It is not a de Polignac number, because 1055044421 - 2¹⁰ = 1055043397 is a prime.

It is a super-2 number, since 2×1055044421² = 2226237460566450482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055044427) 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 5 ways as a sum of consecutive naturals, for example, 547970 + ... + 549891.

It is an arithmetic number, because the mean of its divisors is an integer number (181696161).

Almost surely, 2^1055044421 is an apocalyptic number.

It is an amenable number.

1055044421 is a deficient number, since it is larger than the sum of its proper divisors (35132545).

1055044421 is an equidigital number, since it uses as much as digits as its factorization.

1055044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097923 (or 1097892 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1055044421 is about 32481.4473353636. The cubic root of 1055044421 is about 1018.0214178832.

Adding to 1055044421 its reverse (1244405501), we get a palindrome (2299449922).

The spelling of 1055044421 in words is "one billion, fifty-five million, forty-four thousand, four hundred twenty-one".