20162951 has 2 divisors, whose sum is σ = 20162952. Its totient is φ = 20162950.

The previous prime is 20162921. The next prime is 20162957. The reversal of 20162951 is 15926102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20162951 - 2⁶ = 20162887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20162951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20162957) 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, 10081475 + 10081476.

It is an arithmetic number, because the mean of its divisors is an integer number (10081476).

Almost surely, 2^20162951 is an apocalyptic number.

20162951 is a deficient number, since it is larger than the sum of its proper divisors (1).

20162951 is an equidigital number, since it uses as much as digits as its factorization.

20162951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 20162951 is about 4490.3174720725. The cubic root of 20162951 is about 272.1769636700.

The spelling of 20162951 in words is "twenty million, one hundred sixty-two thousand, nine hundred fifty-one".