20551713 has 32 divisors (see below), whose sum is σ = 34169856. Its totient is φ = 10698048.

The previous prime is 20551703. The next prime is 20551733. The reversal of 20551713 is 31715502.

It is not a de Polignac number, because 20551713 - 2⁴ = 20551697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20551703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22206 + ... + 23112.

It is an arithmetic number, because the mean of its divisors is an integer number (1067808).

Almost surely, 2^20551713 is an apocalyptic number.

It is an amenable number.

20551713 is a deficient number, since it is larger than the sum of its proper divisors (13618143).

20551713 is a wasteful number, since it uses less digits than its factorization.

20551713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 20551713 is about 4533.3997176512. The cubic root of 20551713 is about 273.9151219151.

The spelling of 20551713 in words is "twenty million, five hundred fifty-one thousand, seven hundred thirteen".