145871522 has 8 divisors (see below), whose sum is σ = 224144172. Its totient is φ = 71156800.

The previous prime is 145871521. The next prime is 145871527. The reversal of 145871522 is 225178541.

It can be written as a sum of positive squares in 2 ways, for example, as 132687361 + 13184161 = 11519^2 + 3631^2 .

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

It is not an unprimeable number, because it can be changed into a prime (145871521) 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, 889379 + ... + 889542.

Almost surely, 2^145871522 is an apocalyptic number.

145871522 is a deficient number, since it is larger than the sum of its proper divisors (78272650).

145871522 is a wasteful number, since it uses less digits than its factorization.

145871522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778964.

The product of its digits is 22400, while the sum is 35.

The square root of 145871522 is about 12077.7283460094. The cubic root of 145871522 is about 526.4092411950.

The spelling of 145871522 in words is "one hundred forty-five million, eight hundred seventy-one thousand, five hundred twenty-two".