20046157 has 2 divisors, whose sum is σ = 20046158. Its totient is φ = 20046156.

The previous prime is 20046151. The next prime is 20046167. The reversal of 20046157 is 75164002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12489156 + 7557001 = 3534^2 + 2749^2 .

It is a cyclic number.

It is not a de Polignac number, because 20046157 - 2¹⁹ = 19521869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20046151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10023078 + 10023079.

It is an arithmetic number, because the mean of its divisors is an integer number (10023079).

Almost surely, 2^20046157 is an apocalyptic number.

It is an amenable number.

20046157 is a deficient number, since it is larger than the sum of its proper divisors (1).

20046157 is an equidigital number, since it uses as much as digits as its factorization.

20046157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20046157 is about 4477.2934904918. The cubic root of 20046157 is about 271.6504168500.

The spelling of 20046157 in words is "twenty million, forty-six thousand, one hundred fifty-seven".