155630448 has 30 divisors (see below), whose sum is σ = 435549504. Its totient is φ = 51876768.

The previous prime is 155630441. The next prime is 155630479. The reversal of 155630448 is 844036551.

It is a happy number.

155630448 is a `hidden beast` number, since 15 + 5 + 630 + 4 + 4 + 8 = 666.

155630448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155630441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540240 + ... + 540527.

Almost surely, 2^155630448 is an apocalyptic number.

155630448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155630448 is an abundant number, since it is smaller than the sum of its proper divisors (279919056).

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

155630448 is a wasteful number, since it uses less digits than its factorization.

155630448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080781 (or 1080772 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 155630448 is about 12475.1933051156. The cubic root of 155630448 is about 537.8958445524.

Adding to 155630448 its reverse (844036551), we get a palindrome (999666999).

The spelling of 155630448 in words is "one hundred fifty-five million, six hundred thirty thousand, four hundred forty-eight".