155365540 has 24 divisors (see below), whose sum is σ = 355928832. Its totient is φ = 56496480.

The previous prime is 155365531. The next prime is 155365543. The reversal of 155365540 is 45563551.

It is a junction number, because it is equal to n+sod(n) for n = 155365496 and 155365505.

It is not an unprimeable number, because it can be changed into a prime (155365543) 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, 352884 + ... + 353323.

It is an arithmetic number, because the mean of its divisors is an integer number (14830368).

Almost surely, 2^155365540 is an apocalyptic number.

155365540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155365540 is an abundant number, since it is smaller than the sum of its proper divisors (200563292).

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

155365540 is a wasteful number, since it uses less digits than its factorization.

155365540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706227 (or 706225 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 155365540 is about 12464.5713925510. The cubic root of 155365540 is about 537.5904762063.

The spelling of 155365540 in words is "one hundred fifty-five million, three hundred sixty-five thousand, five hundred forty".