72951011 has 4 divisors (see below), whose sum is σ = 83372592. Its totient is φ = 62529432.

The previous prime is 72950989. The next prime is 72951019. The reversal of 72951011 is 11015927.

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

It is not a de Polignac number, because 72951011 - 2²² = 68756707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72951019) 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, 5210780 + ... + 5210793.

It is an arithmetic number, because the mean of its divisors is an integer number (20843148).

Almost surely, 2^72951011 is an apocalyptic number.

72951011 is a deficient number, since it is larger than the sum of its proper divisors (10421581).

72951011 is a wasteful number, since it uses less digits than its factorization.

72951011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10421580.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 72951011 is about 8541.1363998007. The cubic root of 72951011 is about 417.8404093804.

Adding to 72951011 its reverse (11015927), we get a palindrome (83966938).

The spelling of 72951011 in words is "seventy-two million, nine hundred fifty-one thousand, eleven".