20601573 has 12 divisors (see below), whose sum is σ = 27945504. Its totient is φ = 13497400.

The previous prime is 20601547. The next prime is 20601593. The reversal of 20601573 is 37510602.

It is not a de Polignac number, because 20601573 - 2⁶ = 20601509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20601523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66088 + ... + 66398.

It is an arithmetic number, because the mean of its divisors is an integer number (2328792).

Almost surely, 2^20601573 is an apocalyptic number.

It is an amenable number.

20601573 is a deficient number, since it is larger than the sum of its proper divisors (7343931).

20601573 is an frugal number, since it uses more digits than its factorization.

20601573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 20601573 is about 4538.8955705105. The cubic root of 20601573 is about 274.1364559098.

The spelling of 20601573 in words is "twenty million, six hundred one thousand, five hundred seventy-three".