155598140 has 12 divisors (see below), whose sum is σ = 326756136. Its totient is φ = 62239248.

The previous prime is 155598119. The next prime is 155598181. The reversal of 155598140 is 41895551.

155598140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 155598094 and 155598103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3889934 + ... + 3889973.

It is an arithmetic number, because the mean of its divisors is an integer number (27229678).

Almost surely, 2^155598140 is an apocalyptic number.

155598140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155598140 is an abundant number, since it is smaller than the sum of its proper divisors (171157996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155598140 is a wasteful number, since it uses less digits than its factorization.

155598140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779916 (or 7779914 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 155598140 is about 12473.8983481508. The cubic root of 155598140 is about 537.8586205990.

The spelling of 155598140 in words is "one hundred fifty-five million, five hundred ninety-eight thousand, one hundred forty".