99542519 has 4 divisors (see below), whose sum is σ = 102753600. Its totient is φ = 96331440.

The previous prime is 99542507. The next prime is 99542557. The reversal of 99542519 is 91524599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91524599 = 5347 ⋅17117.

It is a cyclic number.

It is not a de Polignac number, because 99542519 - 2²⁴ = 82765303 is a prime.

It is a super-2 number, since 2×99542519² = 19817426177730722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99542519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99542719) 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, 1605494 + ... + 1605555.

It is an arithmetic number, because the mean of its divisors is an integer number (25688400).

Almost surely, 2^99542519 is an apocalyptic number.

99542519 is a deficient number, since it is larger than the sum of its proper divisors (3211081).

99542519 is a wasteful number, since it uses less digits than its factorization.

99542519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211080.

The product of its digits is 145800, while the sum is 44.

The square root of 99542519 is about 9977.0997288791. The cubic root of 99542519 is about 463.4499883394.

The spelling of 99542519 in words is "ninety-nine million, five hundred forty-two thousand, five hundred nineteen".