145551760 has 20 divisors (see below), whose sum is σ = 338408028. Its totient is φ = 58220672.

The previous prime is 145551737. The next prime is 145551781. The reversal of 145551760 is 67155541.

It can be written as a sum of positive squares in 2 ways, for example, as 51151104 + 94400656 = 7152^2 + 9716^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909619 + ... + 909778.

Almost surely, 2^145551760 is an apocalyptic number.

145551760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145551760 is an abundant number, since it is smaller than the sum of its proper divisors (192856268).

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

145551760 is a wasteful number, since it uses less digits than its factorization.

145551760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819410 (or 1819404 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 145551760 is about 12064.4834120654. The cubic root of 145551760 is about 526.0243161278.

The spelling of 145551760 in words is "one hundred forty-five million, five hundred fifty-one thousand, seven hundred sixty".