20875495 has 8 divisors (see below), whose sum is σ = 25140816. Its totient is φ = 16640256.

The previous prime is 20875483. The next prime is 20875523. The reversal of 20875495 is 59457802.

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

It is a cyclic number.

It is not a de Polignac number, because 20875495 - 2¹³ = 20867303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5962 + ... + 8791.

It is an arithmetic number, because the mean of its divisors is an integer number (3142602).

Almost surely, 2^20875495 is an apocalyptic number.

20875495 is a deficient number, since it is larger than the sum of its proper divisors (4265321).

20875495 is a wasteful number, since it uses less digits than its factorization.

20875495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15041.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 20875495 is about 4568.9708906930. The cubic root of 20875495 is about 275.3460986733.

It can be divided in two parts, 208754 and 95, that added together give a square (208849 = 457²).

The spelling of 20875495 in words is "twenty million, eight hundred seventy-five thousand, four hundred ninety-five".