72726051 has 16 divisors (see below), whose sum is σ = 103420800. Its totient is φ = 45299328.

The previous prime is 72726013. The next prime is 72726103. The reversal of 72726051 is 15062727.

It is not a de Polignac number, because 72726051 - 2¹⁷ = 72594979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72726551) 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 15 ways as a sum of consecutive naturals, for example, 1960 + ... + 12218.

It is an arithmetic number, because the mean of its divisors is an integer number (6463800).

Almost surely, 2^72726051 is an apocalyptic number.

72726051 is a deficient number, since it is larger than the sum of its proper divisors (30694749).

72726051 is a wasteful number, since it uses less digits than its factorization.

72726051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 72726051 is about 8527.9570238129. The cubic root of 72726051 is about 417.4104671338.

Adding to 72726051 its reverse (15062727), we get a palindrome (87788778).

The spelling of 72726051 in words is "seventy-two million, seven hundred twenty-six thousand, fifty-one".