154155540 has 192 divisors, whose sum is σ = 547964928. Its totient is φ = 31449600.

The previous prime is 154155511. The next prime is 154155557. The reversal of 154155540 is 45551451.

154155540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 154155498 and 154155507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 281547 + ... + 282093.

It is an arithmetic number, because the mean of its divisors is an integer number (2853984).

Almost surely, 2^154155540 is an apocalyptic number.

154155540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154155540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273982464).

154155540 is an abundant number, since it is smaller than the sum of its proper divisors (393809388).

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

154155540 is a wasteful number, since it uses less digits than its factorization.

154155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 154155540 is about 12415.9389495922. The cubic root of 154155540 is about 536.1912373599.

The spelling of 154155540 in words is "one hundred fifty-four million, one hundred fifty-five thousand, five hundred forty".