145855152 has 120 divisors (see below), whose sum is σ = 430887600. Its totient is φ = 45986304.

The previous prime is 145855133. The next prime is 145855169. The reversal of 145855152 is 251558541.

145855152 is a `hidden beast` number, since 1 + 4 + 58 + 551 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220999 + ... + 221657.

It is an arithmetic number, because the mean of its divisors is an integer number (3590730).

Almost surely, 2^145855152 is an apocalyptic number.

145855152 is a gapful number since it is divisible by the number (12) 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 145855152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215443800).

145855152 is an abundant number, since it is smaller than the sum of its proper divisors (285032448).

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

145855152 is a wasteful number, since it uses less digits than its factorization.

145855152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 746 counting only the distinct ones).

The product of its digits is 40000, while the sum is 36.

The square root of 145855152 is about 12077.0506333293. The cubic root of 145855152 is about 526.3895488851.

The spelling of 145855152 in words is "one hundred forty-five million, eight hundred fifty-five thousand, one hundred fifty-two".