201954 has 16 divisors (see below), whose sum is σ = 409248. Its totient is φ = 66432.

The previous prime is 201953. The next prime is 201961. The reversal of 201954 is 459102.

It is a self number, because there is not a number n which added to its sum of digits gives 201954.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201954.

It is not an unprimeable number, because it can be changed into a prime (201953) 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, 409 + ... + 755.

It is an arithmetic number, because the mean of its divisors is an integer number (25578).

2²⁰¹⁹⁵⁴ is an apocalyptic number.

201954 is an abundant number, since it is smaller than the sum of its proper divisors (207294).

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

201954 is a wasteful number, since it uses less digits than its factorization.

201954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

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

The square root of 201954 is about 449.3929238428. The cubic root of 201954 is about 58.6701888955.

The spelling of 201954 in words is "two hundred one thousand, nine hundred fifty-four".