755121655 has 16 divisors (see below), whose sum is σ = 957496320. Its totient is φ = 570107808.

The previous prime is 755121611. The next prime is 755121659. The reversal of 755121655 is 556121557.

It is a cyclic number.

It is not a de Polignac number, because 755121655 - 2¹⁷ = 754990583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755121659) 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 in 15 ways as a sum of consecutive naturals, for example, 9874 + ... + 40096.

It is an arithmetic number, because the mean of its divisors is an integer number (59843520).

Almost surely, 2^755121655 is an apocalyptic number.

755121655 is a deficient number, since it is larger than the sum of its proper divisors (202374665).

755121655 is a wasteful number, since it uses less digits than its factorization.

755121655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30510.

The product of its digits is 52500, while the sum is 37.

The square root of 755121655 is about 27479.4769782833. The cubic root of 755121655 is about 910.6237542157.

The spelling of 755121655 in words is "seven hundred fifty-five million, one hundred twenty-one thousand, six hundred fifty-five".