145531527 has 8 divisors (see below), whose sum is σ = 194169216. Its totient is φ = 96957432.

The previous prime is 145531523. The next prime is 145531537. The reversal of 145531527 is 725135541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145531527 - 2² = 145531523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145531523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10273 + ... + 19914.

It is an arithmetic number, because the mean of its divisors is an integer number (24271152).

Almost surely, 2^145531527 is an apocalyptic number.

145531527 is a deficient number, since it is larger than the sum of its proper divisors (48637689).

145531527 is a wasteful number, since it uses less digits than its factorization.

145531527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31797.

The product of its digits is 21000, while the sum is 33.

The square root of 145531527 is about 12063.6448472259. The cubic root of 145531527 is about 525.9999409658. Note that the first 4 decimals are identical.

The spelling of 145531527 in words is "one hundred forty-five million, five hundred thirty-one thousand, five hundred twenty-seven".