72533073 has 4 divisors (see below), whose sum is σ = 96710768. Its totient is φ = 48355380.

The previous prime is 72533003. The next prime is 72533077. The reversal of 72533073 is 37033527.

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 not a de Polignac number, because 72533073 - 2¹⁰ = 72532049 is a prime.

It is a super-2 number, since 2×72533073² = 10522093357646658, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72533073.

It is not an unprimeable number, because it can be changed into a prime (72533077) 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, 12088843 + ... + 12088848.

It is an arithmetic number, because the mean of its divisors is an integer number (24177692).

Almost surely, 2^72533073 is an apocalyptic number.

It is an amenable number.

72533073 is a deficient number, since it is larger than the sum of its proper divisors (24177695).

72533073 is a wasteful number, since it uses less digits than its factorization.

72533073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24177694.

The product of its (nonzero) digits is 13230, while the sum is 30.

The square root of 72533073 is about 8516.6350749577. The cubic root of 72533073 is about 417.0409416409.

The spelling of 72533073 in words is "seventy-two million, five hundred thirty-three thousand, seventy-three".