155305056 has 48 divisors (see below), whose sum is σ = 408333744. Its totient is φ = 51684864.

The previous prime is 155305049. The next prime is 155305079. The reversal of 155305056 is 650503551.

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

It is a congruent number.

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, 96450 + ... + 98046.

It is an arithmetic number, because the mean of its divisors is an integer number (8506953).

Almost surely, 2^155305056 is an apocalyptic number.

155305056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155305056 is an abundant number, since it is smaller than the sum of its proper divisors (253028688).

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

155305056 is a wasteful number, since it uses less digits than its factorization.

155305056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623 (or 2615 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 155305056 is about 12462.1449197159. The cubic root of 155305056 is about 537.5207056022.

The spelling of 155305056 in words is "one hundred fifty-five million, three hundred five thousand, fifty-six".