1005651553 has 2 divisors, whose sum is σ = 1005651554. Its totient is φ = 1005651552.

The previous prime is 1005651529. The next prime is 1005651557. The reversal of 1005651553 is 3551565001.

1005651553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636704289 + 368947264 = 25233^2 + 19208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005651553 - 2²⁵ = 972097121 is a prime.

It is a super-2 number, since 2×1005651553² = 2022670092102623618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005651557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502825776 + 502825777.

It is an arithmetic number, because the mean of its divisors is an integer number (502825777).

Almost surely, 2^1005651553 is an apocalyptic number.

It is an amenable number.

1005651553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005651553 is an equidigital number, since it uses as much as digits as its factorization.

1005651553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 1005651553 is about 31712.0096020419. The cubic root of 1005651553 is about 1001.8803132062.

The spelling of 1005651553 in words is "one billion, five million, six hundred fifty-one thousand, five hundred fifty-three".