4545551 has 2 divisors, whose sum is σ = 4545552. Its totient is φ = 4545550.

The previous prime is 4545521. The next prime is 4545557. The reversal of 4545551 is 1555454.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4545551 - 2¹⁴ = 4529167 is a prime.

It is a Chen prime.

It is equal to p₃₁₈₈₈₁ and since 4545551 and 318881 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4545557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272775 + 2272776.

It is an arithmetic number, because the mean of its divisors is an integer number (2272776).

Almost surely, 2^4545551 is an apocalyptic number.

4545551 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545551 is an equidigital number, since it uses as much as digits as its factorization.

4545551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10000, while the sum is 29.

The square root of 4545551 is about 2132.0297840321. The cubic root of 4545551 is about 165.6515529281.

The spelling of 4545551 in words is "four million, five hundred forty-five thousand, five hundred fifty-one".