201155340 has 48 divisors (see below), whose sum is σ = 563980032. Its totient is φ = 53570496.

The previous prime is 201155327. The next prime is 201155351. The reversal of 201155340 is 43551102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56287 + ... + 59753.

It is an arithmetic number, because the mean of its divisors is an integer number (11749584).

Almost surely, 2^201155340 is an apocalyptic number.

201155340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201155340 is an abundant number, since it is smaller than the sum of its proper divisors (362824692).

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

201155340 is a wasteful number, since it uses less digits than its factorization.

201155340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446 (or 4444 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 201155340 is about 14182.9242400853. The cubic root of 201155340 is about 585.9274644539.

The spelling of 201155340 in words is "two hundred one million, one hundred fifty-five thousand, three hundred forty".