135137550 has 24 divisors (see below), whose sum is σ = 335141496. Its totient is φ = 36036640.

The previous prime is 135137537. The next prime is 135137551. The reversal of 135137550 is 55731531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135137551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450309 + ... + 450608.

It is an arithmetic number, because the mean of its divisors is an integer number (13964229).

Almost surely, 2^135137550 is an apocalyptic number.

135137550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135137550 is an abundant number, since it is smaller than the sum of its proper divisors (200003946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135137550 is a wasteful number, since it uses less digits than its factorization.

135137550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900932 (or 900927 counting only the distinct ones).

The product of its (nonzero) digits is 7875, while the sum is 30.

The square root of 135137550 is about 11624.8677411831. The cubic root of 135137550 is about 513.1669524129.

The spelling of 135137550 in words is "one hundred thirty-five million, one hundred thirty-seven thousand, five hundred fifty".