201650043 has 16 divisors (see below), whose sum is σ = 313548800. Its totient is φ = 115228008.

The previous prime is 201649999. The next prime is 201650047. The reversal of 201650043 is 340056102.

It is a happy number.

It is not a de Polignac number, because 201650043 - 2⁶ = 201649979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201650047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96955 + ... + 99012.

It is an arithmetic number, because the mean of its divisors is an integer number (19596800).

Almost surely, 2^201650043 is an apocalyptic number.

201650043 is a deficient number, since it is larger than the sum of its proper divisors (111898757).

201650043 is an equidigital number, since it uses as much as digits as its factorization.

201650043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195991 (or 195977 counting only the distinct ones).

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

The square root of 201650043 is about 14200.3536223574. The cubic root of 201650043 is about 586.4073966631.

The spelling of 201650043 in words is "two hundred one million, six hundred fifty thousand, forty-three".