145151522 has 4 divisors (see below), whose sum is σ = 217727286. Its totient is φ = 72575760.

The previous prime is 145151509. The next prime is 145151527. The reversal of 145151522 is 225151541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225151541 = 41 ⋅5491501.

It can be written as a sum of positive squares in only one way, i.e., 109641841 + 35509681 = 10471^2 + 5959^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145151491 and 145151500.

It is not an unprimeable number, because it can be changed into a prime (145151527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36287879 + ... + 36287882.

Almost surely, 2^145151522 is an apocalyptic number.

145151522 is a deficient number, since it is larger than the sum of its proper divisors (72575764).

145151522 is an equidigital number, since it uses as much as digits as its factorization.

145151522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72575763.

The product of its digits is 2000, while the sum is 26.

The square root of 145151522 is about 12047.8845445995. The cubic root of 145151522 is about 525.5417198982.

The spelling of 145151522 in words is "one hundred forty-five million, one hundred fifty-one thousand, five hundred twenty-two".