34722521 has 2 divisors, whose sum is σ = 34722522. Its totient is φ = 34722520.

The previous prime is 34722461. The next prime is 34722533. The reversal of 34722521 is 12522743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33512521 + 1210000 = 5789^2 + 1100^2 .

It is an emirp because it is prime and its reverse (12522743) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34722521 is a prime.

It is not a weakly prime, because it can be changed into another prime (34722421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17361260 + 17361261.

It is an arithmetic number, because the mean of its divisors is an integer number (17361261).

Almost surely, 2^34722521 is an apocalyptic number.

It is an amenable number.

34722521 is a deficient number, since it is larger than the sum of its proper divisors (1).

34722521 is an equidigital number, since it uses as much as digits as its factorization.

34722521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 26.

The square root of 34722521 is about 5892.5818619685. The cubic root of 34722521 is about 326.2399058351.

The spelling of 34722521 in words is "thirty-four million, seven hundred twenty-two thousand, five hundred twenty-one".