201145051 has 4 divisors (see below), whose sum is σ = 209890512. Its totient is φ = 192399592.

The previous prime is 201144991. The next prime is 201145069. The reversal of 201145051 is 150541102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150541102 = 2 ⋅75270551.

It is a cyclic number.

It is not a de Polignac number, because 201145051 - 2²¹ = 199047899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201145151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4372696 + ... + 4372741.

It is an arithmetic number, because the mean of its divisors is an integer number (52472628).

Almost surely, 2^201145051 is an apocalyptic number.

201145051 is a deficient number, since it is larger than the sum of its proper divisors (8745461).

201145051 is an equidigital number, since it uses as much as digits as its factorization.

201145051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8745460.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 201145051 is about 14182.5615105312. The cubic root of 201145051 is about 585.9174743132.

Adding to 201145051 its reverse (150541102), we get a palindrome (351686153).

The spelling of 201145051 in words is "two hundred one million, one hundred forty-five thousand, fifty-one".