1523320145 has 8 divisors (see below), whose sum is σ = 1828193640. Its totient is φ = 1218516480.

The previous prime is 1523320133. The next prime is 1523320151. The reversal of 1523320145 is 5410233251.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 79852096 + 1443468049 = 8936^2 + 37993^2 .

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

It is not a de Polignac number, because 1523320145 - 2²² = 1519125841 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77921 + ... + 95489.

It is an arithmetic number, because the mean of its divisors is an integer number (228524205).

Almost surely, 2^1523320145 is an apocalyptic number.

It is an amenable number.

1523320145 is a deficient number, since it is larger than the sum of its proper divisors (304873495).

1523320145 is a wasteful number, since it uses less digits than its factorization.

1523320145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34915.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1523320145 is about 39029.7341138778. The cubic root of 1523320145 is about 1150.6159636541.

Adding to 1523320145 its reverse (5410233251), we get a palindrome (6933553396).

The spelling of 1523320145 in words is "one billion, five hundred twenty-three million, three hundred twenty thousand, one hundred forty-five".