4521551 has 2 divisors, whose sum is σ = 4521552. Its totient is φ = 4521550.

The previous prime is 4521533. The next prime is 4521553. The reversal of 4521551 is 1551254.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4521551 - 2¹⁴ = 4505167 is a prime.

Together with 4521553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4521553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260775 + 2260776.

It is an arithmetic number, because the mean of its divisors is an integer number (2260776).

Almost surely, 2^4521551 is an apocalyptic number.

4521551 is a deficient number, since it is larger than the sum of its proper divisors (1).

4521551 is an equidigital number, since it uses as much as digits as its factorization.

4521551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000, while the sum is 23.

The square root of 4521551 is about 2126.3938957775. The cubic root of 4521551 is about 165.3594977705.

The spelling of 4521551 in words is "four million, five hundred twenty-one thousand, five hundred fifty-one".