145331560 has 128 divisors (see below), whose sum is σ = 374284800. Its totient is φ = 50319360.

The previous prime is 145331507. The next prime is 145331569. The reversal of 145331560 is 65133541.

It is a super-2 number, since 2×145331560² = 42242524664067200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145331569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1286064 + ... + 1286176.

It is an arithmetic number, because the mean of its divisors is an integer number (2924100).

Almost surely, 2^145331560 is an apocalyptic number.

145331560 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 145331560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187142400).

145331560 is an abundant number, since it is smaller than the sum of its proper divisors (228953240).

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

145331560 is a wasteful number, since it uses less digits than its factorization.

145331560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 145331560 is about 12055.3539972910. The cubic root of 145331560 is about 525.7589145151.

It can be divided in two parts, 145 and 331560, that added together give a triangular number (331705 = T₈₁₄).

The spelling of 145331560 in words is "one hundred forty-five million, three hundred thirty-one thousand, five hundred sixty".