155393600 has 168 divisors, whose sum is σ = 420944040. Its totient is φ = 56197120.

The previous prime is 155393597. The next prime is 155393621. The reversal of 155393600 is 6393551.

It can be written as a sum of positive squares in 12 ways, for example, as 440896 + 154952704 = 664^2 + 12448^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 788702 + ... + 788898.

Almost surely, 2^155393600 is an apocalyptic number.

155393600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155393600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210472020).

155393600 is an abundant number, since it is smaller than the sum of its proper divisors (265550440).

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

155393600 is a wasteful number, since it uses less digits than its factorization.

155393600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 155393600 is about 12465.6969319810. The cubic root of 155393600 is about 537.6228383391.

The spelling of 155393600 in words is "one hundred fifty-five million, three hundred ninety-three thousand, six hundred".