1005020453 has 2 divisors, whose sum is σ = 1005020454. Its totient is φ = 1005020452.

The previous prime is 1005020363. The next prime is 1005020459. The reversal of 1005020453 is 3540205001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 961434049 + 43586404 = 31007^2 + 6602^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005020453 - 2¹⁶ = 1004954917 is a prime.

It is a super-2 number, since 2×1005020453² = 2020132221896650418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005020459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502510226 + 502510227.

It is an arithmetic number, because the mean of its divisors is an integer number (502510227).

Almost surely, 2^1005020453 is an apocalyptic number.

It is an amenable number.

1005020453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005020453 is an equidigital number, since it uses as much as digits as its factorization.

1005020453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1005020453 is about 31702.0575515218. The cubic root of 1005020453 is about 1001.6706915686.

Adding to 1005020453 its reverse (3540205001), we get a palindrome (4545225454).

It can be divided in two parts, 10050 and 20453, that added together give a palindrome (30503).

The spelling of 1005020453 in words is "one billion, five million, twenty thousand, four hundred fifty-three".