20542527 has 12 divisors (see below), whose sum is σ = 30696120. Its totient is φ = 13222608.

The previous prime is 20542513. The next prime is 20542531. The reversal of 20542527 is 72524502.

It is not a de Polignac number, because 20542527 - 2⁶ = 20542463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20542527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39093 + ... + 39614.

It is an arithmetic number, because the mean of its divisors is an integer number (2558010).

Almost surely, 2^20542527 is an apocalyptic number.

20542527 is a deficient number, since it is larger than the sum of its proper divisors (10153593).

20542527 is a wasteful number, since it uses less digits than its factorization.

20542527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78742 (or 78739 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 20542527 is about 4532.3864574857. The cubic root of 20542527 is about 273.8743052154.

The spelling of 20542527 in words is "twenty million, five hundred forty-two thousand, five hundred twenty-seven".