20750575 has 12 divisors (see below), whose sum is σ = 25880040. Its totient is φ = 16504160.

The previous prime is 20750567. The next prime is 20750579. The reversal of 20750575 is 57505702.

It is not a de Polignac number, because 20750575 - 2³ = 20750567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20750579) 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, 2157 + ... + 6793.

It is an arithmetic number, because the mean of its divisors is an integer number (2156670).

Almost surely, 2^20750575 is an apocalyptic number.

20750575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20750575 is a deficient number, since it is larger than the sum of its proper divisors (5129465).

20750575 is a wasteful number, since it uses less digits than its factorization.

20750575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826 (or 4821 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 20750575 is about 4555.2799035844. The cubic root of 20750575 is about 274.7957712321.

The spelling of 20750575 in words is "twenty million, seven hundred fifty thousand, five hundred seventy-five".