99715501 has 2 divisors, whose sum is σ = 99715502. Its totient is φ = 99715500.

The previous prime is 99715493. The next prime is 99715507. The reversal of 99715501 is 10551799.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77616100 + 22099401 = 8810^2 + 4701^2 .

It is an emirp because it is prime and its reverse (10551799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99715501 - 2³ = 99715493 is a prime.

It is a super-2 number, since 2×99715501² = 19886362279362002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99715507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49857750 + 49857751.

It is an arithmetic number, because the mean of its divisors is an integer number (49857751).

Almost surely, 2^99715501 is an apocalyptic number.

It is an amenable number.

99715501 is a deficient number, since it is larger than the sum of its proper divisors (1).

99715501 is an equidigital number, since it uses as much as digits as its factorization.

99715501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 99715501 is about 9985.7649181222. The cubic root of 99715501 is about 463.7182894745.

The spelling of 99715501 in words is "ninety-nine million, seven hundred fifteen thousand, five hundred one".