4545901 has 2 divisors, whose sum is σ = 4545902. Its totient is φ = 4545900.

The previous prime is 4545899. The next prime is 4545911. The reversal of 4545901 is 1095454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4515625 + 30276 = 2125^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 4545901 - 2¹ = 4545899 is a prime.

Together with 4545899, it forms a pair of twin primes.

It is equal to p₃₁₈₉₀₇ and since 4545901 and 318907 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4545901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4545911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272950 + 2272951.

It is an arithmetic number, because the mean of its divisors is an integer number (2272951).

Almost surely, 2^4545901 is an apocalyptic number.

It is an amenable number.

4545901 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545901 is an equidigital number, since it uses as much as digits as its factorization.

4545901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 4545901 is about 2132.1118638571. Note that the first 3 decimals coincide. The cubic root of 4545901 is about 165.6558044519.

The spelling of 4545901 in words is "four million, five hundred forty-five thousand, nine hundred one".