155623104 has 168 divisors, whose sum is σ = 549188640. Its totient is φ = 41029632.

The previous prime is 155623103. The next prime is 155623121. The reversal of 155623104 is 401326551.

155623104 is a `hidden beast` number, since 1 + 556 + 2 + 3 + 104 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is not an unprimeable number, because it can be changed into a prime (155623103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50932 + ... + 53900.

It is an arithmetic number, because the mean of its divisors is an integer number (3268980).

Almost surely, 2^155623104 is an apocalyptic number.

155623104 is a gapful number since it is divisible by the number (14) 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 155623104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274594320).

155623104 is an abundant number, since it is smaller than the sum of its proper divisors (393565536).

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

155623104 is a wasteful number, since it uses less digits than its factorization.

155623104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 155623104 is about 12474.8989575066. The cubic root of 155623104 is about 537.8873835491.

Adding to 155623104 its reverse (401326551), we get a palindrome (556949655).

The spelling of 155623104 in words is "one hundred fifty-five million, six hundred twenty-three thousand, one hundred four".