10531505 has 4 divisors (see below), whose sum is σ = 12637812. Its totient is φ = 8425200.

The previous prime is 10531457. The next prime is 10531513. The reversal of 10531505 is 50513501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8248384 + 2283121 = 2872^2 + 1511^2 .

It is not a de Polignac number, because 10531505 - 2⁸ = 10531249 is a prime.

It is a super-2 number, since 2×10531505² = 221825195130050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053146 + ... + 1053155.

It is an arithmetic number, because the mean of its divisors is an integer number (3159453).

Almost surely, 2^10531505 is an apocalyptic number.

It is an amenable number.

10531505 is a deficient number, since it is larger than the sum of its proper divisors (2106307).

10531505 is an equidigital number, since it uses as much as digits as its factorization.

10531505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106306.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 10531505 is about 3245.2280351310. The cubic root of 10531505 is about 219.1947490284.

The spelling of 10531505 in words is "ten million, five hundred thirty-one thousand, five hundred five".