145528047 has 12 divisors (see below), whose sum is σ = 240236880. Its totient is φ = 83158848.

The previous prime is 145528021. The next prime is 145528069. The reversal of 145528047 is 740825541.

It is not a de Polignac number, because 145528047 - 2¹¹ = 145525999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145528247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1154922 + ... + 1155047.

It is an arithmetic number, because the mean of its divisors is an integer number (20019740).

Almost surely, 2^145528047 is an apocalyptic number.

145528047 is a deficient number, since it is larger than the sum of its proper divisors (94708833).

145528047 is a wasteful number, since it uses less digits than its factorization.

145528047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309982 (or 2309979 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 145528047 is about 12063.5006113483. The cubic root of 145528047 is about 525.9957483018.

The spelling of 145528047 in words is "one hundred forty-five million, five hundred twenty-eight thousand, forty-seven".