155402056 has 16 divisors (see below), whose sum is σ = 292891500. Its totient is φ = 77297664.

The previous prime is 155402041. The next prime is 155402057. The reversal of 155402056 is 650204551.

It can be written as a sum of positive squares in 2 ways, for example, as 155401156 + 900 = 12466^2 + 30^2 .

It is not an unprimeable number, because it can be changed into a prime (155402057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48781 + ... + 51868.

Almost surely, 2^155402056 is an apocalyptic number.

It is an amenable number.

155402056 is a deficient number, since it is larger than the sum of its proper divisors (137489444).

155402056 is a wasteful number, since it uses less digits than its factorization.

155402056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100848 (or 100844 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 155402056 is about 12466.0360981348. The cubic root of 155402056 is about 537.6325900411.

The spelling of 155402056 in words is "one hundred fifty-five million, four hundred two thousand, fifty-six".