10503553 has 2 divisors, whose sum is σ = 10503554. Its totient is φ = 10503552.

The previous prime is 10503551. The next prime is 10503583. The reversal of 10503553 is 35530501.

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., 6411024 + 4092529 = 2532^2 + 2023^2 .

It is a cyclic number.

It is not a de Polignac number, because 10503553 - 2¹ = 10503551 is a prime.

It is a super-2 number, since 2×10503553² = 220649251247618, which contains 22 as substring.

Together with 10503551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10503551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5251776 + 5251777.

It is an arithmetic number, because the mean of its divisors is an integer number (5251777).

Almost surely, 2^10503553 is an apocalyptic number.

It is an amenable number.

10503553 is a deficient number, since it is larger than the sum of its proper divisors (1).

10503553 is an equidigital number, since it uses as much as digits as its factorization.

10503553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 10503553 is about 3240.9185426357. The cubic root of 10503553 is about 219.0006533066. Note that the first 3 decimals are identical.

The spelling of 10503553 in words is "ten million, five hundred three thousand, five hundred fifty-three".