7352521381 has 2 divisors, whose sum is σ = 7352521382. Its totient is φ = 7352521380.

The previous prime is 7352521361. The next prime is 7352521387. The reversal of 7352521381 is 1831252537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6647140900 + 705380481 = 81530^2 + 26559^2 .

It is a cyclic number.

It is not a de Polignac number, because 7352521381 - 2¹⁵ = 7352488613 is a prime.

It is a super-3 number, since 3×7352521381³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 7352521381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7352521387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3676260690 + 3676260691.

It is an arithmetic number, because the mean of its divisors is an integer number (3676260691).

Almost surely, 2^7352521381 is an apocalyptic number.

It is an amenable number.

7352521381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7352521381 is an equidigital number, since it uses as much as digits as its factorization.

7352521381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 7352521381 is about 85746.8447291211. The cubic root of 7352521381 is about 1944.5185866512.

The spelling of 7352521381 in words is "seven billion, three hundred fifty-two million, five hundred twenty-one thousand, three hundred eighty-one".