155680516 has 6 divisors (see below), whose sum is σ = 272440910. Its totient is φ = 77840256.

The previous prime is 155680513. The next prime is 155680519. The reversal of 155680516 is 615086551.

155680516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155680513) and next prime (155680519).

It can be written as a sum of positive squares in only one way, i.e., 132158016 + 23522500 = 11496^2 + 4850^2 .

It is not an unprimeable number, because it can be changed into a prime (155680513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19460061 + ... + 19460068.

Almost surely, 2^155680516 is an apocalyptic number.

It is an amenable number.

155680516 is a deficient number, since it is larger than the sum of its proper divisors (116760394).

155680516 is a wasteful number, since it uses less digits than its factorization.

155680516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38920133 (or 38920131 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 155680516 is about 12477.1998461193. The cubic root of 155680516 is about 537.9535206733.

The spelling of 155680516 in words is "one hundred fifty-five million, six hundred eighty thousand, five hundred sixteen".