20075261 has 2 divisors, whose sum is σ = 20075262. Its totient is φ = 20075260.

The previous prime is 20075227. The next prime is 20075303. The reversal of 20075261 is 16257002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15452761 + 4622500 = 3931^2 + 2150^2 .

It is a cyclic number.

It is not a de Polignac number, because 20075261 - 2¹⁴ = 20058877 is a prime.

It is a super-2 number, since 2×20075261² = 806032208436242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20675261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10037630 + 10037631.

It is an arithmetic number, because the mean of its divisors is an integer number (10037631).

Almost surely, 2^20075261 is an apocalyptic number.

It is an amenable number.

20075261 is a deficient number, since it is larger than the sum of its proper divisors (1).

20075261 is an equidigital number, since it uses as much as digits as its factorization.

20075261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20075261 is about 4480.5424894760. The cubic root of 20075261 is about 271.7818184390.

The spelling of 20075261 in words is "twenty million, seventy-five thousand, two hundred sixty-one".