135445001 has 8 divisors (see below), whose sum is σ = 143559720. Its totient is φ = 127346688.

The previous prime is 135444979. The next prime is 135445007. The reversal of 135445001 is 100544531.

It can be written as a sum of positive squares in 4 ways, for example, as 53071225 + 82373776 = 7285^2 + 9076^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135445001 - 2⁶ = 135444937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135445007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15665 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (17944965).

Almost surely, 2^135445001 is an apocalyptic number.

It is an amenable number.

135445001 is a deficient number, since it is larger than the sum of its proper divisors (8114719).

135445001 is a wasteful number, since it uses less digits than its factorization.

135445001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 135445001 is about 11638.0840777166. The cubic root of 135445001 is about 513.5558258078. Note that the first 3 decimals are identical.

Adding to 135445001 its reverse (100544531), we get a palindrome (235989532).

The spelling of 135445001 in words is "one hundred thirty-five million, four hundred forty-five thousand, one".