155516340 has 192 divisors, whose sum is σ = 550416384. Its totient is φ = 31967232.

The previous prime is 155516327. The next prime is 155516351. The reversal of 155516340 is 43615551.

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 = 155516298 and 155516307.

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, 163747 + ... + 164693.

It is an arithmetic number, because the mean of its divisors is an integer number (2866752).

Almost surely, 2^155516340 is an apocalyptic number.

155516340 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 155516340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275208192).

155516340 is an abundant number, since it is smaller than the sum of its proper divisors (394900044).

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

155516340 is a wasteful number, since it uses less digits than its factorization.

155516340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 155516340 is about 12470.6190704391. The cubic root of 155516340 is about 537.7643509474.

The spelling of 155516340 in words is "one hundred fifty-five million, five hundred sixteen thousand, three hundred forty".