201254545 has 4 divisors (see below), whose sum is σ = 241505460. Its totient is φ = 161003632.

The previous prime is 201254497. The next prime is 201254549. The reversal of 201254545 is 545452102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93779856 + 107474689 = 9684^2 + 10367^2 .

It is a cyclic number.

It is not a de Polignac number, because 201254545 - 2⁹ = 201254033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201254549) 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, 20125450 + ... + 20125459.

It is an arithmetic number, because the mean of its divisors is an integer number (60376365).

Almost surely, 2^201254545 is an apocalyptic number.

It is an amenable number.

201254545 is a deficient number, since it is larger than the sum of its proper divisors (40250915).

201254545 is an equidigital number, since it uses as much as digits as its factorization.

201254545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40250914.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 201254545 is about 14186.4211484081. The cubic root of 201254545 is about 586.0237704251.

The spelling of 201254545 in words is "two hundred one million, two hundred fifty-four thousand, five hundred forty-five".