155218080 has 48 divisors (see below), whose sum is σ = 488938464. Its totient is φ = 41391360.

The previous prime is 155218067. The next prime is 155218097. The reversal of 155218080 is 80812551.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161206 + ... + 162165.

It is an arithmetic number, because the mean of its divisors is an integer number (10186218).

Almost surely, 2^155218080 is an apocalyptic number.

155218080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155218080 is an abundant number, since it is smaller than the sum of its proper divisors (333720384).

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

155218080 is a wasteful number, since it uses less digits than its factorization.

155218080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323389 (or 323381 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 155218080 is about 12458.6548230537. The cubic root of 155218080 is about 537.4203437032.

The spelling of 155218080 in words is "one hundred fifty-five million, two hundred eighteen thousand, eighty".