87523099 has 2 divisors, whose sum is σ = 87523100. Its totient is φ = 87523098.

The previous prime is 87523091. The next prime is 87523129. The reversal of 87523099 is 99032578.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87523099 - 2³ = 87523091 is a prime.

It is not a weakly prime, because it can be changed into another prime (87523091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43761549 + 43761550.

It is an arithmetic number, because the mean of its divisors is an integer number (43761550).

Almost surely, 2^87523099 is an apocalyptic number.

87523099 is a deficient number, since it is larger than the sum of its proper divisors (1).

87523099 is an equidigital number, since it uses as much as digits as its factorization.

87523099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 87523099 is about 9355.3780789448. The cubic root of 87523099 is about 443.9910635190.

The spelling of 87523099 in words is "eighty-seven million, five hundred twenty-three thousand, ninety-nine".