1401171601 has 2 divisors, whose sum is σ = 1401171602. Its totient is φ = 1401171600.

The previous prime is 1401171599. The next prime is 1401171617. The reversal of 1401171601 is 1061711041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1308992400 + 92179201 = 36180^2 + 9601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401171601 - 2¹ = 1401171599 is a prime.

Together with 1401171599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1401171301) 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, 700585800 + 700585801.

It is an arithmetic number, because the mean of its divisors is an integer number (700585801).

Almost surely, 2^1401171601 is an apocalyptic number.

It is an amenable number.

1401171601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401171601 is an equidigital number, since it uses as much as digits as its factorization.

1401171601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 1401171601 is about 37432.2267705249. The cubic root of 1401171601 is about 1119.0009162818. Note that the first 3 decimals are identical.

Adding to 1401171601 its reverse (1061711041), we get a palindrome (2462882642).

The spelling of 1401171601 in words is "one billion, four hundred one million, one hundred seventy-one thousand, six hundred one".