20145527 has 8 divisors (see below), whose sum is σ = 21521376. Its totient is φ = 18790912.

The previous prime is 20145509. The next prime is 20145547. The reversal of 20145527 is 72554102.

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 20145527 - 2¹⁴ = 20129143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20145496 and 20145505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145547) 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, 3323 + ... + 7164.

It is an arithmetic number, because the mean of its divisors is an integer number (2690172).

Almost surely, 2^20145527 is an apocalyptic number.

20145527 is a deficient number, since it is larger than the sum of its proper divisors (1375849).

20145527 is a wasteful number, since it uses less digits than its factorization.

20145527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10617.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 20145527 is about 4488.3768781153. The cubic root of 20145527 is about 272.0985396646.

Adding to 20145527 its reverse (72554102), we get a palindrome (92699629).

The spelling of 20145527 in words is "twenty million, one hundred forty-five thousand, five hundred twenty-seven".