20501049 has 8 divisors (see below), whose sum is σ = 27488160. Its totient is φ = 13590656.

The previous prime is 20501029. The next prime is 20501069. The reversal of 20501049 is 94010502.

It is an interprime number because it is at equal distance from previous prime (20501029) and next prime (20501069).

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 20501049 - 2¹¹ = 20499001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20501009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18552 + ... + 19625.

It is an arithmetic number, because the mean of its divisors is an integer number (3436020).

Almost surely, 2^20501049 is an apocalyptic number.

It is an amenable number.

20501049 is a deficient number, since it is larger than the sum of its proper divisors (6987111).

20501049 is a wasteful number, since it uses less digits than its factorization.

20501049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38359.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20501049 is about 4527.8084102577. The cubic root of 20501049 is about 273.6898518840.

The spelling of 20501049 in words is "twenty million, five hundred one thousand, forty-nine".