201053640 has 32 divisors (see below), whose sum is σ = 603161280. Its totient is φ = 53614272.

The previous prime is 201053623. The next prime is 201053641. The reversal of 201053640 is 46350102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201053641) 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, 837604 + ... + 837843.

It is an arithmetic number, because the mean of its divisors is an integer number (18848790).

Almost surely, 2^201053640 is an apocalyptic number.

201053640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201053640 is an abundant number, since it is smaller than the sum of its proper divisors (402107640).

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

201053640 is a wasteful number, since it uses less digits than its factorization.

201053640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675461 (or 1675457 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 201053640 is about 14179.3384895065. The cubic root of 201053640 is about 585.8287035191.

The spelling of 201053640 in words is "two hundred one million, fifty-three thousand, six hundred forty".