45783521 has 8 divisors (see below), whose sum is σ = 55078080. Its totient is φ = 37177488.

The previous prime is 45783509. The next prime is 45783523. The reversal of 45783521 is 12538754.

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 a de Polignac number, because none of the positive numbers 2^k-45783521 is a prime.

It is a super-2 number, since 2×45783521² = 4192261590314882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45783523) 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, 171986 + ... + 172251.

It is an arithmetic number, because the mean of its divisors is an integer number (6884760).

Almost surely, 2^45783521 is an apocalyptic number.

It is an amenable number.

45783521 is a deficient number, since it is larger than the sum of its proper divisors (9294559).

45783521 is a wasteful number, since it uses less digits than its factorization.

45783521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344263.

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

The square root of 45783521 is about 6766.3521191259. The cubic root of 45783521 is about 357.7418345134.

The spelling of 45783521 in words is "forty-five million, seven hundred eighty-three thousand, five hundred twenty-one".