34719521 has 2 divisors, whose sum is σ = 34719522. Its totient is φ = 34719520.

The previous prime is 34719493. The next prime is 34719527. The reversal of 34719521 is 12591743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33640000 + 1079521 = 5800^2 + 1039^2 .

It is an emirp because it is prime and its reverse (12591743) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34719521 is a prime.

It is a super-3 number, since 3×34719521³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (34719527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17359760 + 17359761.

It is an arithmetic number, because the mean of its divisors is an integer number (17359761).

Almost surely, 2^34719521 is an apocalyptic number.

It is an amenable number.

34719521 is a deficient number, since it is larger than the sum of its proper divisors (1).

34719521 is an equidigital number, since it uses as much as digits as its factorization.

34719521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 34719521 is about 5892.3272991238. The cubic root of 34719521 is about 326.2305099360.

The spelling of 34719521 in words is "thirty-four million, seven hundred nineteen thousand, five hundred twenty-one".