34890521 has 2 divisors, whose sum is σ = 34890522. Its totient is φ = 34890520.

The previous prime is 34890491. The next prime is 34890539. The reversal of 34890521 is 12509843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31416025 + 3474496 = 5605^2 + 1864^2 .

It is a cyclic number.

It is not a de Polignac number, because 34890521 - 2¹⁰ = 34889497 is a prime.

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 (34890571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17445260 + 17445261.

It is an arithmetic number, because the mean of its divisors is an integer number (17445261).

Almost surely, 2^34890521 is an apocalyptic number.

It is an amenable number.

34890521 is a deficient number, since it is larger than the sum of its proper divisors (1).

34890521 is an equidigital number, since it uses as much as digits as its factorization.

34890521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 34890521 is about 5906.8198719785. The cubic root of 34890521 is about 326.7652147256.

The spelling of 34890521 in words is "thirty-four million, eight hundred ninety thousand, five hundred twenty-one".