2021532545 has 8 divisors (see below), whose sum is σ = 2438030400. Its totient is φ = 1609098480.

The previous prime is 2021532529. The next prime is 2021532547. The reversal of 2021532545 is 5452351202.

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

It is not a de Polignac number, because 2021532545 - 2⁴ = 2021532529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021532547) 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, 1014851 + ... + 1016840.

It is an arithmetic number, because the mean of its divisors is an integer number (304753800).

Almost surely, 2^2021532545 is an apocalyptic number.

It is an amenable number.

2021532545 is a deficient number, since it is larger than the sum of its proper divisors (416497855).

2021532545 is a wasteful number, since it uses less digits than its factorization.

2021532545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031895.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2021532545 is about 44961.4562152962. The cubic root of 2021532545 is about 1264.4264706269.

Adding to 2021532545 its reverse (5452351202), we get a palindrome (7473883747).

The spelling of 2021532545 in words is "two billion, twenty-one million, five hundred thirty-two thousand, five hundred forty-five".