1003454521 has 2 divisors, whose sum is σ = 1003454522. Its totient is φ = 1003454520.

The previous prime is 1003454519. The next prime is 1003454533. The reversal of 1003454521 is 1254543001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556724025 + 446730496 = 23595^2 + 21136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003454521 - 2¹ = 1003454519 is a prime.

Together with 1003454519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1003454591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501727260 + 501727261.

It is an arithmetic number, because the mean of its divisors is an integer number (501727261).

Almost surely, 2^1003454521 is an apocalyptic number.

It is an amenable number.

1003454521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003454521 is an equidigital number, since it uses as much as digits as its factorization.

1003454521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1003454521 is about 31677.3502837595. The cubic root of 1003454521 is about 1001.1501835706.

Adding to 1003454521 its reverse (1254543001), we get a palindrome (2257997522).

The spelling of 1003454521 in words is "one billion, three million, four hundred fifty-four thousand, five hundred twenty-one".