155134449 has 24 divisors (see below), whose sum is σ = 236377440. Its totient is φ = 97771968.

The previous prime is 155134391. The next prime is 155134453. The reversal of 155134449 is 944431551.

It is a happy number.

It is not a de Polignac number, because 155134449 - 2⁷ = 155134321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155134459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140869 + ... + 141965.

It is an arithmetic number, because the mean of its divisors is an integer number (9849060).

Almost surely, 2^155134449 is an apocalyptic number.

155134449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

155134449 is a deficient number, since it is larger than the sum of its proper divisors (81242991).

155134449 is a wasteful number, since it uses less digits than its factorization.

155134449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1946 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 155134449 is about 12455.2980293528. The cubic root of 155134449 is about 537.3238062481.

The spelling of 155134449 in words is "one hundred fifty-five million, one hundred thirty-four thousand, four hundred forty-nine".