20495541 has 16 divisors (see below), whose sum is σ = 29887488. Its totient is φ = 12390000.

The previous prime is 20495539. The next prime is 20495567. The reversal of 20495541 is 14559402.

It is not a de Polignac number, because 20495541 - 2¹ = 20495539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20495499 and 20495508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20495581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24370 + ... + 25196.

It is an arithmetic number, because the mean of its divisors is an integer number (1867968).

Almost surely, 2^20495541 is an apocalyptic number.

It is an amenable number.

20495541 is a deficient number, since it is larger than the sum of its proper divisors (9391947).

20495541 is a wasteful number, since it uses less digits than its factorization.

20495541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 20495541 is about 4527.2001281145. The cubic root of 20495541 is about 273.6653390127.

The spelling of 20495541 in words is "twenty million, four hundred ninety-five thousand, five hundred forty-one".