201955020 has 24 divisors (see below), whose sum is σ = 565474224. Its totient is φ = 53854656.

The previous prime is 201954997. The next prime is 201955021. The reversal of 201955020 is 20559102.

It is not an unprimeable number, because it can be changed into a prime (201955021) 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, 1682899 + ... + 1683018.

It is an arithmetic number, because the mean of its divisors is an integer number (23561426).

Almost surely, 2^201955020 is an apocalyptic number.

201955020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201955020 is an abundant number, since it is smaller than the sum of its proper divisors (363519204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201955020 is a wasteful number, since it uses less digits than its factorization.

201955020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365929 (or 3365927 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 201955020 is about 14211.0879245750. The cubic root of 201955020 is about 586.7028766964.

The spelling of 201955020 in words is "two hundred one million, nine hundred fifty-five thousand, twenty".