20147377 has 2 divisors, whose sum is σ = 20147378. Its totient is φ = 20147376.

The previous prime is 20147371. The next prime is 20147383. The reversal of 20147377 is 77374102.

It is a balanced prime because it is at equal distance from previous prime (20147371) and next prime (20147383).

It can be written as a sum of positive squares in only one way, i.e., 19149376 + 998001 = 4376^2 + 999^2 .

It is a cyclic number.

It is not a de Polignac number, because 20147377 - 2¹¹ = 20145329 is a prime.

It is not a weakly prime, because it can be changed into another prime (20147371) 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, 10073688 + 10073689.

It is an arithmetic number, because the mean of its divisors is an integer number (10073689).

Almost surely, 2^20147377 is an apocalyptic number.

It is an amenable number.

20147377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20147377 is an equidigital number, since it uses as much as digits as its factorization.

20147377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 20147377 is about 4488.5829612473. The cubic root of 20147377 is about 272.1068685091.

The spelling of 20147377 in words is "twenty million, one hundred forty-seven thousand, three hundred seventy-seven".