972001533 has 4 divisors (see below), whose sum is σ = 1296002048. Its totient is φ = 648001020.

The previous prime is 972001531. The next prime is 972001553. The reversal of 972001533 is 335100279.

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 972001533 - 2¹ = 972001531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 972001533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972001531) 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, 162000253 + ... + 162000258.

It is an arithmetic number, because the mean of its divisors is an integer number (324000512).

Almost surely, 2^972001533 is an apocalyptic number.

It is an amenable number.

972001533 is a deficient number, since it is larger than the sum of its proper divisors (324000515).

972001533 is a wasteful number, since it uses less digits than its factorization.

972001533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324000514.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 972001533 is about 31176.9391217291. The cubic root of 972001533 is about 990.5786954350.

The spelling of 972001533 in words is "nine hundred seventy-two million, one thousand, five hundred thirty-three".