45121523 has 8 divisors (see below), whose sum is σ = 49029120. Its totient is φ = 41367240.

The previous prime is 45121513. The next prime is 45121529. The reversal of 45121523 is 32512154.

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

It is a cyclic number.

It is not a de Polignac number, because 45121523 - 2⁴ = 45121507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45121529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37715 + ... + 38892.

It is an arithmetic number, because the mean of its divisors is an integer number (6128640).

Almost surely, 2^45121523 is an apocalyptic number.

45121523 is a deficient number, since it is larger than the sum of its proper divisors (3907597).

45121523 is a wasteful number, since it uses less digits than its factorization.

45121523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76657.

The product of its digits is 1200, while the sum is 23.

The square root of 45121523 is about 6717.2556152048. The cubic root of 45121523 is about 356.0092236595.

Adding to 45121523 its reverse (32512154), we get a palindrome (77633677).

The spelling of 45121523 in words is "forty-five million, one hundred twenty-one thousand, five hundred twenty-three".