72975091 has 8 divisors (see below), whose sum is σ = 83820800. Its totient is φ = 62234568.

The previous prime is 72975079. The next prime is 72975103. The reversal of 72975091 is 19057927.

It is an interprime number because it is at equal distance from previous prime (72975079) and next prime (72975103).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72975091 - 2⁹ = 72974579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72975031) 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 7 ways as a sum of consecutive naturals, for example, 24801 + ... + 27586.

It is an arithmetic number, because the mean of its divisors is an integer number (10477600).

Almost surely, 2^72975091 is an apocalyptic number.

72975091 is a deficient number, since it is larger than the sum of its proper divisors (10845709).

72975091 is a wasteful number, since it uses less digits than its factorization.

72975091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52593.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 72975091 is about 8542.5459319807. The cubic root of 72975091 is about 417.8863785409.

The spelling of 72975091 in words is "seventy-two million, nine hundred seventy-five thousand, ninety-one".