20529373 has 2 divisors, whose sum is σ = 20529374. Its totient is φ = 20529372.

The previous prime is 20529337. The next prime is 20529389. The reversal of 20529373 is 37392502.

Together with previous prime (20529337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 8543929 = 3462^2 + 2923^2 .

It is a cyclic number.

It is not a de Polignac number, because 20529373 - 2¹³ = 20521181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20529473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10264686 + 10264687.

It is an arithmetic number, because the mean of its divisors is an integer number (10264687).

Almost surely, 2^20529373 is an apocalyptic number.

It is an amenable number.

20529373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20529373 is an equidigital number, since it uses as much as digits as its factorization.

20529373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 20529373 is about 4530.9351131968. The cubic root of 20529373 is about 273.8158360728.

It can be divided in two parts, 20529 and 373, that added together give a palindrome (20902).

The spelling of 20529373 in words is "twenty million, five hundred twenty-nine thousand, three hundred seventy-three".