87523567 has 2 divisors, whose sum is σ = 87523568. Its totient is φ = 87523566.

The previous prime is 87523559. The next prime is 87523573. The reversal of 87523567 is 76532578.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87523567 - 2³ = 87523559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87523577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43761783 + 43761784.

It is an arithmetic number, because the mean of its divisors is an integer number (43761784).

Almost surely, 2^87523567 is an apocalyptic number.

87523567 is a deficient number, since it is larger than the sum of its proper divisors (1).

87523567 is an equidigital number, since it uses as much as digits as its factorization.

87523567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 87523567 is about 9355.4030912623. The cubic root of 87523567 is about 443.9918548813.

It can be divided in two parts, 875 and 23567, that added together give a palindrome (24442).

The spelling of 87523567 in words is "eighty-seven million, five hundred twenty-three thousand, five hundred sixty-seven".