155138716 has 12 divisors (see below), whose sum is σ = 271615680. Its totient is φ = 77534240.

The previous prime is 155138713. The next prime is 155138741. The reversal of 155138716 is 617831551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155138713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2880 + ... + 17848.

It is an arithmetic number, because the mean of its divisors is an integer number (22634640).

Almost surely, 2^155138716 is an apocalyptic number.

It is an amenable number.

155138716 is a deficient number, since it is larger than the sum of its proper divisors (116476964).

155138716 is a wasteful number, since it uses less digits than its factorization.

155138716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17564 (or 17562 counting only the distinct ones).

The product of its digits is 25200, while the sum is 37.

The square root of 155138716 is about 12455.4693207442. The cubic root of 155138716 is about 537.3287325979.

The spelling of 155138716 in words is "one hundred fifty-five million, one hundred thirty-eight thousand, seven hundred sixteen".