135541001 has 4 divisors (see below), whose sum is σ = 141434112. Its totient is φ = 129647892.

The previous prime is 135540991. The next prime is 135541009. The reversal of 135541001 is 100145531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100145531 = 31 ⋅3230501.

It is a cyclic number.

It is not a de Polignac number, because 135541001 - 2²⁶ = 68432137 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 (135541009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2946521 + ... + 2946566.

It is an arithmetic number, because the mean of its divisors is an integer number (35358528).

Almost surely, 2^135541001 is an apocalyptic number.

It is an amenable number.

135541001 is a deficient number, since it is larger than the sum of its proper divisors (5893111).

135541001 is an equidigital number, since it uses as much as digits as its factorization.

135541001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893110.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 135541001 is about 11642.2077373667. The cubic root of 135541001 is about 513.6771289583.

Adding to 135541001 its reverse (100145531), we get a palindrome (235686532).

The spelling of 135541001 in words is "one hundred thirty-five million, five hundred forty-one thousand, one".