155249600 has 84 divisors (see below), whose sum is σ = 416786568. Its totient is φ = 56448000.

The previous prime is 155249597. The next prime is 155249641. The reversal of 155249600 is 6942551.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13190 + ... + 22010.

Almost surely, 2^155249600 is an apocalyptic number.

155249600 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 155249600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208393284).

155249600 is an abundant number, since it is smaller than the sum of its proper divisors (261536968).

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

155249600 is a wasteful number, since it uses less digits than its factorization.

155249600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854 (or 8839 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 155249600 is about 12459.9197429197. The cubic root of 155249600 is about 537.4567190677.

The spelling of 155249600 in words is "one hundred fifty-five million, two hundred forty-nine thousand, six hundred".