145557860 has 48 divisors (see below), whose sum is σ = 367731840. Its totient is φ = 47278080.

The previous prime is 145557857. The next prime is 145557877. The reversal of 145557860 is 68755541.

145557860 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 24701 + ... + 30020.

It is an arithmetic number, because the mean of its divisors is an integer number (7661080).

Almost surely, 2^145557860 is an apocalyptic number.

145557860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145557860 is an abundant number, since it is smaller than the sum of its proper divisors (222173980).

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

145557860 is a wasteful number, since it uses less digits than its factorization.

145557860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54756 (or 54754 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 145557860 is about 12064.7362175888. The cubic root of 145557860 is about 526.0316644954.

The spelling of 145557860 in words is "one hundred forty-five million, five hundred fifty-seven thousand, eight hundred sixty".