754832553721 has 9 divisors (see below), whose sum is σ = 781784899311. Its totient is φ = 728779518264.

The previous prime is 754832553703. The next prime is 754832553733. The reversal of 754832553721 is 127355238457.

It is a happy number.

The square root of 754832553721 is 868811.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 395815881321 + 359016672400 = 629139^2 + 599180^2 .

It is not a de Polignac number, because 754832553721 - 2⁵ = 754832553689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (754832553701) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25180540 + ... + 25210498.

Almost surely, 2^754832553721 is an apocalyptic number.

754832553721 is the 868811-st square number.

754832553721 is the 434406-th centered octagonal number.

It is an amenable number.

754832553721 is a deficient number, since it is larger than the sum of its proper divisors (26952345590).

754832553721 is an frugal number, since it uses more digits than its factorization.

754832553721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59976 (or 29988 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 52.

The spelling of 754832553721 in words is "seven hundred fifty-four billion, eight hundred thirty-two million, five hundred fifty-three thousand, seven hundred twenty-one".