4865551 has 2 divisors, whose sum is σ = 4865552. Its totient is φ = 4865550.

The previous prime is 4865521. The next prime is 4865557. The reversal of 4865551 is 1555684.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4865551 - 2¹⁹ = 4341263 is a prime.

It is a super-4 number, since 4×4865551⁴ (a number of 28 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4865557) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2432775 + 2432776.

It is an arithmetic number, because the mean of its divisors is an integer number (2432776).

Almost surely, 2^4865551 is an apocalyptic number.

4865551 is a deficient number, since it is larger than the sum of its proper divisors (1).

4865551 is an equidigital number, since it uses as much as digits as its factorization.

4865551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 34.

The square root of 4865551 is about 2205.7994015776. The cubic root of 4865551 is about 169.4509506734.

The spelling of 4865551 in words is "four million, eight hundred sixty-five thousand, five hundred fifty-one".