99715541 has 4 divisors (see below), whose sum is σ = 101350284. Its totient is φ = 98080800.

The previous prime is 99715537. The next prime is 99715579. The reversal of 99715541 is 14551799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14551799 = 197 ⋅73867.

It can be written as a sum of positive squares in 2 ways, for example, as 28313041 + 71402500 = 5321^2 + 8450^2 .

It is a cyclic number.

It is not a de Polignac number, because 99715541 - 2² = 99715537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99715501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817280 + ... + 817401.

It is an arithmetic number, because the mean of its divisors is an integer number (25337571).

Almost surely, 2^99715541 is an apocalyptic number.

It is an amenable number.

99715541 is a deficient number, since it is larger than the sum of its proper divisors (1634743).

99715541 is a wasteful number, since it uses less digits than its factorization.

99715541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634742.

The product of its digits is 56700, while the sum is 41.

The square root of 99715541 is about 9985.7669209731. The cubic root of 99715541 is about 463.7183514800.

The spelling of 99715541 in words is "ninety-nine million, seven hundred fifteen thousand, five hundred forty-one".