750722261 has 4 divisors (see below), whose sum is σ = 794882412. Its totient is φ = 706562112.

The previous prime is 750722249. The next prime is 750722293. The reversal of 750722261 is 162227057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162227057 = 503 ⋅322519.

It can be written as a sum of positive squares in 2 ways, for example, as 403608100 + 347114161 = 20090^2 + 18631^2 .

It is a cyclic number.

It is not a de Polignac number, because 750722261 - 2⁶ = 750722197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (750722201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22080050 + ... + 22080083.

It is an arithmetic number, because the mean of its divisors is an integer number (198720603).

Almost surely, 2^750722261 is an apocalyptic number.

It is an amenable number.

750722261 is a deficient number, since it is larger than the sum of its proper divisors (44160151).

750722261 is a wasteful number, since it uses less digits than its factorization.

750722261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44160150.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 750722261 is about 27399.3113234621. The cubic root of 750722261 is about 908.8518551413.

The spelling of 750722261 in words is "seven hundred fifty million, seven hundred twenty-two thousand, two hundred sixty-one".