20534375 has 12 divisors (see below), whose sum is σ = 25670232. Its totient is φ = 16425000.

The previous prime is 20534359. The next prime is 20534387. The reversal of 20534375 is 57343502.

It is not a de Polignac number, because 20534375 - 2⁴ = 20534359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161 + ... + 6410.

It is an arithmetic number, because the mean of its divisors is an integer number (2139186).

Almost surely, 2^20534375 is an apocalyptic number.

20534375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20534375 is a deficient number, since it is larger than the sum of its proper divisors (5135857).

20534375 is an frugal number, since it uses more digits than its factorization.

20534375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6596 (or 6576 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 20534375 is about 4531.4870627643. The cubic root of 20534375 is about 273.8380727576.

Adding to 20534375 its reverse (57343502), we get a palindrome (77877877).

The spelling of 20534375 in words is "twenty million, five hundred thirty-four thousand, three hundred seventy-five".