155504004 has 24 divisors (see below), whose sum is σ = 366922080. Its totient is φ = 51251904.

The previous prime is 155503993. The next prime is 155504009. The reversal of 155504004 is 400405551.

It is not an unprimeable number, because it can be changed into a prime (155504009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 71734 + ... + 73869.

It is an arithmetic number, because the mean of its divisors is an integer number (15288420).

Almost surely, 2^155504004 is an apocalyptic number.

It is an amenable number.

155504004 is an abundant number, since it is smaller than the sum of its proper divisors (211418076).

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

155504004 is a wasteful number, since it uses less digits than its factorization.

155504004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145699 (or 145697 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 155504004 is about 12470.1244580798. The cubic root of 155504004 is about 537.7501315704.

Adding to 155504004 its reverse (400405551), we get a palindrome (555909555).

The spelling of 155504004 in words is "one hundred fifty-five million, five hundred four thousand, four".