755551 has 2 divisors, whose sum is σ = 755552. Its totient is φ = 755550.

The previous prime is 755539. The next prime is 755561. The reversal of 755551 is 155557.

It is a strong prime.

It is an emirp because it is prime and its reverse (155557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 755551 - 2¹⁵ = 722783 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (755561) 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, 377775 + 377776.

It is an arithmetic number, because the mean of its divisors is an integer number (377776).

2⁷⁵⁵⁵⁵¹ is an apocalyptic number.

755551 is a deficient number, since it is larger than the sum of its proper divisors (1).

755551 is an equidigital number, since it uses as much as digits as its factorization.

755551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4375, while the sum is 28.

The square root of 755551 is about 869.2243668927. The cubic root of 755551 is about 91.0796308169.

The spelling of 755551 in words is "seven hundred fifty-five thousand, five hundred fifty-one".