4125551 has 2 divisors, whose sum is σ = 4125552. Its totient is φ = 4125550.

The previous prime is 4125521. The next prime is 4125553. The reversal of 4125551 is 1555214.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4125551 - 2¹⁴ = 4109167 is a prime.

Together with 4125553, 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 (4125553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2062775 + 2062776.

It is an arithmetic number, because the mean of its divisors is an integer number (2062776).

Almost surely, 2^4125551 is an apocalyptic number.

4125551 is a deficient number, since it is larger than the sum of its proper divisors (1).

4125551 is an equidigital number, since it uses as much as digits as its factorization.

4125551 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4125551 is about 2031.1452434526. The cubic root of 4125551 is about 160.3838569957.

The spelling of 4125551 in words is "four million, one hundred twenty-five thousand, five hundred fifty-one".