145532511 has 32 divisors (see below), whose sum is σ = 222942720. Its totient is φ = 93768192.

The previous prime is 145532489. The next prime is 145532521. The reversal of 145532511 is 115235541.

145532511 is a `hidden beast` number, since 145 + 5 + 3 + 2 + 511 = 666.

It is not a de Polignac number, because 145532511 - 2⁶ = 145532447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145532521) 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, 118975 + ... + 120191.

It is an arithmetic number, because the mean of its divisors is an integer number (6966960).

Almost surely, 2^145532511 is an apocalyptic number.

145532511 is a deficient number, since it is larger than the sum of its proper divisors (77410209).

145532511 is a wasteful number, since it uses less digits than its factorization.

145532511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1366 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 145532511 is about 12063.6856308510. The cubic root of 145532511 is about 526.0011264656.

The spelling of 145532511 in words is "one hundred forty-five million, five hundred thirty-two thousand, five hundred eleven".