155505004 has 6 divisors (see below), whose sum is σ = 272133764. Its totient is φ = 77752500.

The previous prime is 155504957. The next prime is 155505011. The reversal of 155505004 is 400505551.

It is a self number, because there is not a number n which added to its sum of digits gives 155505004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19438122 + ... + 19438129.

Almost surely, 2^155505004 is an apocalyptic number.

It is an amenable number.

155505004 is a deficient number, since it is larger than the sum of its proper divisors (116628760).

155505004 is a wasteful number, since it uses less digits than its factorization.

155505004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38876255 (or 38876253 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 155505004 is about 12470.1645538461. The cubic root of 155505004 is about 537.7512842716.

The spelling of 155505004 in words is "one hundred fifty-five million, five hundred five thousand, four".