135401445 has 12 divisors (see below), whose sum is σ = 234695916. Its totient is φ = 72214080.

The previous prime is 135401423. The next prime is 135401471. The reversal of 135401445 is 544104531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71673156 + 63728289 = 8466^2 + 7983^2 .

It is not a de Polignac number, because 135401445 - 2⁹ = 135400933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1504416 + ... + 1504505.

It is an arithmetic number, because the mean of its divisors is an integer number (19557993).

Almost surely, 2^135401445 is an apocalyptic number.

135401445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135401445 is a deficient number, since it is larger than the sum of its proper divisors (99294471).

135401445 is a wasteful number, since it uses less digits than its factorization.

135401445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008932 (or 3008929 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 135401445 is about 11636.2126570461. The cubic root of 135401445 is about 513.5007706549.

Adding to 135401445 its reverse (544104531), we get a palindrome (679505976).

The spelling of 135401445 in words is "one hundred thirty-five million, four hundred one thousand, four hundred forty-five".