72951043 has 4 divisors (see below), whose sum is σ = 79582968. Its totient is φ = 66319120.

The previous prime is 72951031. The next prime is 72951077. The reversal of 72951043 is 34015927.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72951043 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72950996 and 72951014.

It is not an unprimeable number, because it can be changed into a prime (72951023) 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, 3315946 + ... + 3315967.

It is an arithmetic number, because the mean of its divisors is an integer number (19895742).

Almost surely, 2^72951043 is an apocalyptic number.

72951043 is a deficient number, since it is larger than the sum of its proper divisors (6631925).

72951043 is a wasteful number, since it uses less digits than its factorization.

72951043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6631924.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 72951043 is about 8541.1382730875. The cubic root of 72951043 is about 417.8404704757.

It can be divided in two parts, 7295 and 1043, that added together give a palindrome (8338).

The spelling of 72951043 in words is "seventy-two million, nine hundred fifty-one thousand, forty-three".