1054554521 has 4 divisors (see below), whose sum is σ = 1090918500. Its totient is φ = 1018190544.

The previous prime is 1054554499. The next prime is 1054554583. The reversal of 1054554521 is 1254554501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 721674496 + 332880025 = 26864^2 + 18245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1054554521 - 2¹⁴ = 1054538137 is a prime.

It is a super-2 number, since 2×1054554521² = 2224170475523078882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1054554821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18181946 + ... + 18182003.

It is an arithmetic number, because the mean of its divisors is an integer number (272729625).

Almost surely, 2^1054554521 is an apocalyptic number.

It is an amenable number.

1054554521 is a deficient number, since it is larger than the sum of its proper divisors (36363979).

1054554521 is an equidigital number, since it uses as much as digits as its factorization.

1054554521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36363978.

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 1054554521 is about 32473.9052317395. The cubic root of 1054554521 is about 1017.8638239165.

The spelling of 1054554521 in words is "one billion, fifty-four million, five hundred fifty-four thousand, five hundred twenty-one".