155120600 has 24 divisors (see below), whose sum is σ = 360655860. Its totient is φ = 62048160.

The previous prime is 155120593. The next prime is 155120627. The reversal of 155120600 is 6021551.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 387602 + ... + 388001.

Almost surely, 2^155120600 is an apocalyptic number.

155120600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155120600 is an abundant number, since it is smaller than the sum of its proper divisors (205535260).

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

155120600 is a wasteful number, since it uses less digits than its factorization.

155120600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775619 (or 775610 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 155120600 is about 12454.7420687865. The cubic root of 155120600 is about 537.3078166364.

The spelling of 155120600 in words is "one hundred fifty-five million, one hundred twenty thousand, six hundred".