20601550 has 12 divisors (see below), whose sum is σ = 38318976. Its totient is φ = 8240600.

The previous prime is 20601547. The next prime is 20601593. The reversal of 20601550 is 5510602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205966 + ... + 206065.

It is an arithmetic number, because the mean of its divisors is an integer number (3193248).

Almost surely, 2^20601550 is an apocalyptic number.

20601550 is a deficient number, since it is larger than the sum of its proper divisors (17717426).

20601550 is a wasteful number, since it uses less digits than its factorization.

20601550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412043 (or 412038 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 20601550 is about 4538.8930368538. The cubic root of 20601550 is about 274.1363538926.

The spelling of 20601550 in words is "twenty million, six hundred one thousand, five hundred fifty".