135671401 has 2 divisors, whose sum is σ = 135671402. Its totient is φ = 135671400.

The previous prime is 135671387. The next prime is 135671413. The reversal of 135671401 is 104176531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114511401 + 21160000 = 10701^2 + 4600^2 .

It is a cyclic number.

It is not a de Polignac number, because 135671401 - 2⁵ = 135671369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135671401.

It is not a weakly prime, because it can be changed into another prime (135671461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67835700 + 67835701.

It is an arithmetic number, because the mean of its divisors is an integer number (67835701).

Almost surely, 2^135671401 is an apocalyptic number.

It is an amenable number.

135671401 is a deficient number, since it is larger than the sum of its proper divisors (1).

135671401 is an equidigital number, since it uses as much as digits as its factorization.

135671401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 135671401 is about 11647.8067034099. The cubic root of 135671401 is about 513.8418073647.

The spelling of 135671401 in words is "one hundred thirty-five million, six hundred seventy-one thousand, four hundred one".