145057232 has 20 divisors (see below), whose sum is σ = 287585760. Its totient is φ = 70841568.

The previous prime is 145057219. The next prime is 145057247. The reversal of 145057232 is 232750541.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 145057195 and 145057204.

It is a congruent number.

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, 104732 + ... + 106107.

It is an arithmetic number, because the mean of its divisors is an integer number (14379288).

Almost surely, 2^145057232 is an apocalyptic number.

It is an amenable number.

145057232 is a deficient number, since it is larger than the sum of its proper divisors (142528528).

145057232 is a wasteful number, since it uses less digits than its factorization.

145057232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210890 (or 210884 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 145057232 is about 12043.9707737938. The cubic root of 145057232 is about 525.4278984656.

The spelling of 145057232 in words is "one hundred forty-five million, fifty-seven thousand, two hundred thirty-two".