20720527 has 2 divisors, whose sum is σ = 20720528. Its totient is φ = 20720526.

The previous prime is 20720521. The next prime is 20720533. The reversal of 20720527 is 72502702.

It is a balanced prime because it is at equal distance from previous prime (20720521) and next prime (20720533).

It is a cyclic number.

It is not a de Polignac number, because 20720527 - 2³ = 20720519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20720521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10360263 + 10360264.

It is an arithmetic number, because the mean of its divisors is an integer number (10360264).

Almost surely, 2^20720527 is an apocalyptic number.

20720527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20720527 is an equidigital number, since it uses as much as digits as its factorization.

20720527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 20720527 is about 4551.9805579550. The cubic root of 20720527 is about 274.6630672450.

The spelling of 20720527 in words is "twenty million, seven hundred twenty thousand, five hundred twenty-seven".