145511020 has 12 divisors (see below), whose sum is σ = 305573184. Its totient is φ = 58204400.

The previous prime is 145511017. The next prime is 145511027. The reversal of 145511020 is 20115541.

It is not an unprimeable number, because it can be changed into a prime (145511027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3637756 + ... + 3637795.

It is an arithmetic number, because the mean of its divisors is an integer number (25464432).

Almost surely, 2^145511020 is an apocalyptic number.

145511020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145511020 is an abundant number, since it is smaller than the sum of its proper divisors (160062164).

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

145511020 is a wasteful number, since it uses less digits than its factorization.

145511020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275560 (or 7275558 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 145511020 is about 12062.7948668623. The cubic root of 145511020 is about 525.9752334043.

Adding to 145511020 its reverse (20115541), we get a palindrome (165626561).

The spelling of 145511020 in words is "one hundred forty-five million, five hundred eleven thousand, twenty".