10987543 has 4 divisors (see below), whose sum is σ = 12557200. Its totient is φ = 9417888.

The previous prime is 10987541. The next prime is 10987553. The reversal of 10987543 is 34578901.

10987543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10987543 - 2¹ = 10987541 is a prime.

It is a super-2 number, since 2×10987543² = 241452202353698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10987541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784818 + ... + 784831.

It is an arithmetic number, because the mean of its divisors is an integer number (3139300).

Almost surely, 2^10987543 is an apocalyptic number.

10987543 is a deficient number, since it is larger than the sum of its proper divisors (1569657).

10987543 is an equidigital number, since it uses as much as digits as its factorization.

10987543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569656.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 10987543 is about 3314.7462949674. The cubic root of 10987543 is about 222.3140254677.

The spelling of 10987543 in words is "ten million, nine hundred eighty-seven thousand, five hundred forty-three".