20893753 has 2 divisors, whose sum is σ = 20893754. Its totient is φ = 20893752.

The previous prime is 20893739. The next prime is 20893757. The reversal of 20893753 is 35739802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17040384 + 3853369 = 4128^2 + 1963^2 .

It is a cyclic number.

It is not a de Polignac number, because 20893753 - 2¹³ = 20885561 is a prime.

It is not a weakly prime, because it can be changed into another prime (20893757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10446876 + 10446877.

It is an arithmetic number, because the mean of its divisors is an integer number (10446877).

Almost surely, 2^20893753 is an apocalyptic number.

It is an amenable number.

20893753 is a deficient number, since it is larger than the sum of its proper divisors (1).

20893753 is an equidigital number, since it uses as much as digits as its factorization.

20893753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 20893753 is about 4570.9684969380. The cubic root of 20893753 is about 275.4263491319.

It can be divided in two parts, 208 and 93753, that added together give a triangular number (93961 = T₄₃₃).

The spelling of 20893753 in words is "twenty million, eight hundred ninety-three thousand, seven hundred fifty-three".