100564553 has 2 divisors, whose sum is σ = 100564554. Its totient is φ = 100564552.

The previous prime is 100564523. The next prime is 100564559. The reversal of 100564553 is 355465001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97456384 + 3108169 = 9872^2 + 1763^2 .

It is an emirp because it is prime and its reverse (355465001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100564553 - 2²⁴ = 83787337 is a prime.

It is a super-2 number, since 2×100564553² = 20226458640179618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (100564559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50282276 + 50282277.

It is an arithmetic number, because the mean of its divisors is an integer number (50282277).

Almost surely, 2^100564553 is an apocalyptic number.

It is an amenable number.

100564553 is a deficient number, since it is larger than the sum of its proper divisors (1).

100564553 is an equidigital number, since it uses as much as digits as its factorization.

100564553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 100564553 is about 10028.1879220525. The cubic root of 100564553 is about 465.0307190559.

The spelling of 100564553 in words is "one hundred million, five hundred sixty-four thousand, five hundred fifty-three".