20541375 has 72 divisors (see below), whose sum is σ = 40276080. Its totient is φ = 10044000.

The previous prime is 20541373. The next prime is 20541379. The reversal of 20541375 is 57314502.

It is a happy number.

It is not a de Polignac number, because 20541375 - 2¹ = 20541373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541371) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 662610 + ... + 662640.

It is an arithmetic number, because the mean of its divisors is an integer number (559390).

Almost surely, 2^20541375 is an apocalyptic number.

20541375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20541375 is a deficient number, since it is larger than the sum of its proper divisors (19734705).

20541375 is a wasteful number, since it uses less digits than its factorization.

20541375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20541375 is about 4532.2593703362. The cubic root of 20541375 is about 273.8691856068.

Adding to 20541375 its reverse (57314502), we get a palindrome (77855877).

The spelling of 20541375 in words is "twenty million, five hundred forty-one thousand, three hundred seventy-five".