155630996 has 6 divisors (see below), whose sum is σ = 272354250. Its totient is φ = 77815496.

The previous prime is 155630983. The next prime is 155631079. The reversal of 155630996 is 699036551.

155630996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 116942596 + 38688400 = 10814^2 + 6220^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19453871 + ... + 19453878.

It is an arithmetic number, because the mean of its divisors is an integer number (45392375).

Almost surely, 2^155630996 is an apocalyptic number.

It is an amenable number.

155630996 is a deficient number, since it is larger than the sum of its proper divisors (116723254).

155630996 is a wasteful number, since it uses less digits than its factorization.

155630996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38907753 (or 38907751 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 155630996 is about 12475.2152686837. The cubic root of 155630996 is about 537.8964758911.

The spelling of 155630996 in words is "one hundred fifty-five million, six hundred thirty thousand, nine hundred ninety-six".