45781523 has 8 divisors (see below), whose sum is σ = 47892768. Its totient is φ = 43680384.

The previous prime is 45781481. The next prime is 45781529. The reversal of 45781523 is 32518754.

It is a happy number.

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 45781523 - 2¹² = 45777427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45781529) 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, 7661 + ... + 12257.

It is an arithmetic number, because the mean of its divisors is an integer number (5986596).

Almost surely, 2^45781523 is an apocalyptic number.

45781523 is a deficient number, since it is larger than the sum of its proper divisors (2111245).

45781523 is a wasteful number, since it uses less digits than its factorization.

45781523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053.

The product of its digits is 33600, while the sum is 35.

The square root of 45781523 is about 6766.2044751840. The cubic root of 45781523 is about 357.7366304679.

The spelling of 45781523 in words is "forty-five million, seven hundred eighty-one thousand, five hundred twenty-three".