20514829 has 2 divisors, whose sum is σ = 20514830. Its totient is φ = 20514828.

The previous prime is 20514787. The next prime is 20514833. The reversal of 20514829 is 92841502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20475625 + 39204 = 4525^2 + 198^2 .

It is a cyclic number.

It is not a de Polignac number, because 20514829 - 2¹³ = 20506637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20514829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20514899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10257414 + 10257415.

It is an arithmetic number, because the mean of its divisors is an integer number (10257415).

Almost surely, 2^20514829 is an apocalyptic number.

It is an amenable number.

20514829 is a deficient number, since it is larger than the sum of its proper divisors (1).

20514829 is an equidigital number, since it uses as much as digits as its factorization.

20514829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 20514829 is about 4529.3298621319. The cubic root of 20514829 is about 273.7511593398.

The spelling of 20514829 in words is "twenty million, five hundred fourteen thousand, eight hundred twenty-nine".