10549987 has 4 divisors (see below), whose sum is σ = 12057136. Its totient is φ = 9042840.

The previous prime is 10549969. The next prime is 10549991. The reversal of 10549987 is 78994501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78994501 = 1231 ⋅64171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10549987 is a prime.

It is a super-2 number, since 2×10549987² = 222604451400338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10549927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753564 + ... + 753577.

It is an arithmetic number, because the mean of its divisors is an integer number (3014284).

Almost surely, 2^10549987 is an apocalyptic number.

10549987 is a deficient number, since it is larger than the sum of its proper divisors (1507149).

10549987 is an equidigital number, since it uses as much as digits as its factorization.

10549987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507148.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 10549987 is about 3248.0743525972. The cubic root of 10549987 is about 219.3228975325.

The spelling of 10549987 in words is "ten million, five hundred forty-nine thousand, nine hundred eighty-seven".