20750523 has 8 divisors (see below), whose sum is σ = 29294928. Its totient is φ = 13019904.

The previous prime is 20750479. The next prime is 20750537. The reversal of 20750523 is 32505702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20750523 - 2⁶ = 20750459 is a prime.

It is a super-3 number, since 3×20750523³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20750493 and 20750502.

It is not an unprimeable number, because it can be changed into a prime (20750593) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 203386 + ... + 203487.

It is an arithmetic number, because the mean of its divisors is an integer number (3661866).

Almost surely, 2^20750523 is an apocalyptic number.

20750523 is a deficient number, since it is larger than the sum of its proper divisors (8544405).

20750523 is a wasteful number, since it uses less digits than its factorization.

20750523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406893.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 20750523 is about 4555.2741959184. The cubic root of 20750523 is about 274.7955416899.

It can be divided in two parts, 2075052 and 3, that multiplied together give a triangular number (6225156 = T₃₅₂₈).

The spelling of 20750523 in words is "twenty million, seven hundred fifty thousand, five hundred twenty-three".