72519799 has 4 divisors (see below), whose sum is σ = 79112520. Its totient is φ = 65927080.

The previous prime is 72519793. The next prime is 72519803. The reversal of 72519799 is 99791527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72519799 - 2¹¹ = 72517751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72519793) 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, 3296344 + ... + 3296365.

It is an arithmetic number, because the mean of its divisors is an integer number (19778130).

Almost surely, 2^72519799 is an apocalyptic number.

72519799 is a deficient number, since it is larger than the sum of its proper divisors (6592721).

72519799 is a wasteful number, since it uses less digits than its factorization.

72519799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592720.

The product of its digits is 357210, while the sum is 49.

The square root of 72519799 is about 8515.8557409106. The cubic root of 72519799 is about 417.0154997335.

The spelling of 72519799 in words is "seventy-two million, five hundred nineteen thousand, seven hundred ninety-nine".