752081021 has 2 divisors, whose sum is σ = 752081022. Its totient is φ = 752081020.

The previous prime is 752080951. The next prime is 752081063. The reversal of 752081021 is 120180257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749992996 + 2088025 = 27386^2 + 1445^2 .

It is an emirp because it is prime and its reverse (120180257) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-752081021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (752081221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 376040510 + 376040511.

It is an arithmetic number, because the mean of its divisors is an integer number (376040511).

Almost surely, 2^752081021 is an apocalyptic number.

It is an amenable number.

752081021 is a deficient number, since it is larger than the sum of its proper divisors (1).

752081021 is an equidigital number, since it uses as much as digits as its factorization.

752081021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 752081021 is about 27424.0956277504. The cubic root of 752081021 is about 909.3998461990.

The spelling of 752081021 in words is "seven hundred fifty-two million, eighty-one thousand, twenty-one".