155448438 has 16 divisors (see below), whose sum is σ = 311026176. Its totient is φ = 51794600.

The previous prime is 155448437. The next prime is 155448457. The reversal of 155448438 is 834844551.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155448438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155448431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18163 + ... + 25313.

It is an arithmetic number, because the mean of its divisors is an integer number (19439136).

Almost surely, 2^155448438 is an apocalyptic number.

155448438 is an abundant number, since it is smaller than the sum of its proper divisors (155577738).

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

155448438 is a wasteful number, since it uses less digits than its factorization.

155448438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10779.

The product of its digits is 307200, while the sum is 42.

The square root of 155448438 is about 12467.8962940827. The cubic root of 155448438 is about 537.6860728048.

The spelling of 155448438 in words is "one hundred fifty-five million, four hundred forty-eight thousand, four hundred thirty-eight".