155660002 has 16 divisors (see below), whose sum is σ = 236187000. Its totient is φ = 76936320.

The previous prime is 155659991. The next prime is 155660003. The reversal of 155660002 is 200066551.

155660002 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 4 ways, for example, as 142110241 + 13549761 = 11921^2 + 3681^2 .

It is not an unprimeable number, because it can be changed into a prime (155660003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67102 + ... + 69382.

Almost surely, 2^155660002 is an apocalyptic number.

155660002 is a deficient number, since it is larger than the sum of its proper divisors (80526998).

155660002 is a wasteful number, since it uses less digits than its factorization.

155660002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 155660002 is about 12476.3777595903. The cubic root of 155660002 is about 537.9298909485.

The spelling of 155660002 in words is "one hundred fifty-five million, six hundred sixty thousand, two".