752788381 has 2 divisors, whose sum is σ = 752788382. Its totient is φ = 752788380.

The previous prime is 752788343. The next prime is 752788391. The reversal of 752788381 is 183887257.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 752624356 + 164025 = 27434^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 752788381 - 2¹⁷ = 752657309 is a prime.

It is a super-2 number, since 2×752788381² = 1133380693137202322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (752788301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 376394190 + 376394191.

It is an arithmetic number, because the mean of its divisors is an integer number (376394191).

Almost surely, 2^752788381 is an apocalyptic number.

It is an amenable number.

752788381 is a deficient number, since it is larger than the sum of its proper divisors (1).

752788381 is an equidigital number, since it uses as much as digits as its factorization.

752788381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 49.

The square root of 752788381 is about 27436.9892845407. The cubic root of 752788381 is about 909.6848649175.

The spelling of 752788381 in words is "seven hundred fifty-two million, seven hundred eighty-eight thousand, three hundred eighty-one".