72975493 has 4 divisors (see below), whose sum is σ = 73412640. Its totient is φ = 72538348.

The previous prime is 72975479. The next prime is 72975499. The reversal of 72975493 is 39457927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72975493 - 2⁹ = 72974981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72975499) 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, 218323 + ... + 218656.

It is an arithmetic number, because the mean of its divisors is an integer number (18353160).

Almost surely, 2^72975493 is an apocalyptic number.

It is an amenable number.

72975493 is a deficient number, since it is larger than the sum of its proper divisors (437147).

72975493 is a wasteful number, since it uses less digits than its factorization.

72975493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437146.

The product of its digits is 476280, while the sum is 46.

The square root of 72975493 is about 8542.5694612335. The cubic root of 72975493 is about 417.8871458804.

The spelling of 72975493 in words is "seventy-two million, nine hundred seventy-five thousand, four hundred ninety-three".