72819051 has 4 divisors (see below), whose sum is σ = 97092072. Its totient is φ = 48546032.

The previous prime is 72819049. The next prime is 72819053. The reversal of 72819051 is 15091827.

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

It is an interprime number because it is at equal distance from previous prime (72819049) and next prime (72819053).

It is a cyclic number.

It is not a de Polignac number, because 72819051 - 2¹ = 72819049 is a prime.

It is a super-2 number, since 2×72819051² = 10605228377081202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72819053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12136506 + ... + 12136511.

It is an arithmetic number, because the mean of its divisors is an integer number (24273018).

Almost surely, 2^72819051 is an apocalyptic number.

72819051 is a deficient number, since it is larger than the sum of its proper divisors (24273021).

72819051 is a wasteful number, since it uses less digits than its factorization.

72819051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24273020.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 72819051 is about 8533.4079358718. The cubic root of 72819051 is about 417.5883155467.

The spelling of 72819051 in words is "seventy-two million, eight hundred nineteen thousand, fifty-one".