20270051 has 2 divisors, whose sum is σ = 20270052. Its totient is φ = 20270050.

The previous prime is 20270039. The next prime is 20270059. The reversal of 20270051 is 15007202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20270051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20270059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10135025 + 10135026.

It is an arithmetic number, because the mean of its divisors is an integer number (10135026).

Almost surely, 2^20270051 is an apocalyptic number.

20270051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20270051 is an equidigital number, since it uses as much as digits as its factorization.

20270051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 20270051 is about 4502.2273376630. The cubic root of 20270051 is about 272.6580224210.

Adding to 20270051 its reverse (15007202), we get a palindrome (35277253).

The spelling of 20270051 in words is "twenty million, two hundred seventy thousand, fifty-one".