135211550 has 24 divisors (see below), whose sum is σ = 253015056. Its totient is φ = 53757440.

The previous prime is 135211537. The next prime is 135211567. The reversal of 135211550 is 55112531.

It is a happy number.

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, 254 + ... + 16446.

It is an arithmetic number, because the mean of its divisors is an integer number (10542294).

Almost surely, 2^135211550 is an apocalyptic number.

135211550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135211550 is a deficient number, since it is larger than the sum of its proper divisors (117803506).

135211550 is a wasteful number, since it uses less digits than its factorization.

135211550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16372 (or 16367 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 135211550 is about 11628.0501374908. The cubic root of 135211550 is about 513.2606037213.

The spelling of 135211550 in words is "one hundred thirty-five million, two hundred eleven thousand, five hundred fifty".