752011321 has 4 divisors (see below), whose sum is σ = 753643044. Its totient is φ = 750379600.

The previous prime is 752011297. The next prime is 752011333. The reversal of 752011321 is 123110257.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135978921 + 616032400 = 11661^2 + 24820^2 .

It is a cyclic number.

It is not a de Polignac number, because 752011321 - 2¹³ = 752003129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 752011292 and 752011301.

It is not an unprimeable number, because it can be changed into a prime (752011021) 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, 815170 + ... + 816091.

It is an arithmetic number, because the mean of its divisors is an integer number (188410761).

Almost surely, 2^752011321 is an apocalyptic number.

It is an amenable number.

752011321 is a deficient number, since it is larger than the sum of its proper divisors (1631723).

752011321 is a wasteful number, since it uses less digits than its factorization.

752011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631722.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 752011321 is about 27422.8248180234. The cubic root of 752011321 is about 909.3717520949.

Adding to 752011321 its reverse (123110257), we get a palindrome (875121578).

The spelling of 752011321 in words is "seven hundred fifty-two million, eleven thousand, three hundred twenty-one".