45521751 has 8 divisors (see below), whose sum is σ = 66213504. Its totient is φ = 27588920.

The previous prime is 45521737. The next prime is 45521771. The reversal of 45521751 is 15712554.

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 45521751 - 2⁶ = 45521687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45521771) 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, 689691 + ... + 689756.

It is an arithmetic number, because the mean of its divisors is an integer number (8276688).

Almost surely, 2^45521751 is an apocalyptic number.

45521751 is a deficient number, since it is larger than the sum of its proper divisors (20691753).

45521751 is a wasteful number, since it uses less digits than its factorization.

45521751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379461.

The product of its digits is 7000, while the sum is 30.

The square root of 45521751 is about 6746.9808803642. The cubic root of 45521751 is about 357.0587275590.

The spelling of 45521751 in words is "forty-five million, five hundred twenty-one thousand, seven hundred fifty-one".