106523987 has 2 divisors, whose sum is σ = 106523988. Its totient is φ = 106523986.

The previous prime is 106523953. The next prime is 106524001. The reversal of 106523987 is 789325601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 106523987 - 2²² = 102329683 is a prime.

It is a super-2 number, since 2×106523987² = 22694719612752338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106525987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53261993 + 53261994.

It is an arithmetic number, because the mean of its divisors is an integer number (53261994).

Almost surely, 2^106523987 is an apocalyptic number.

106523987 is a deficient number, since it is larger than the sum of its proper divisors (1).

106523987 is an equidigital number, since it uses as much as digits as its factorization.

106523987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 106523987 is about 10321.0458287908. The cubic root of 106523987 is about 474.0408894325.

It can be divided in two parts, 1065 and 23987, that added together give a palindrome (25052).

The spelling of 106523987 in words is "one hundred six million, five hundred twenty-three thousand, nine hundred eighty-seven".