20532997 has 8 divisors (see below), whose sum is σ = 21640320. Its totient is φ = 19443600.

The previous prime is 20532971. The next prime is 20533001. The reversal of 20532997 is 79923502.

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 20532997 - 2¹⁵ = 20500229 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 (20532907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2097 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (2705040).

Almost surely, 2^20532997 is an apocalyptic number.

It is an amenable number.

20532997 is a deficient number, since it is larger than the sum of its proper divisors (1107323).

20532997 is a wasteful number, since it uses less digits than its factorization.

20532997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 20532997 is about 4531.3350129956. The cubic root of 20532997 is about 273.8319471381.

It can be divided in two parts, 2053 and 2997, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 20532997 in words is "twenty million, five hundred thirty-two thousand, nine hundred ninety-seven".