45445487 has 4 divisors (see below), whose sum is σ = 45538536. Its totient is φ = 45352440.

The previous prime is 45445459. The next prime is 45445501. The reversal of 45445487 is 78454454.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45445487 - 2¹⁴ = 45429103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45445417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45788 + ... + 46769.

It is an arithmetic number, because the mean of its divisors is an integer number (11384634).

Almost surely, 2^45445487 is an apocalyptic number.

45445487 is a deficient number, since it is larger than the sum of its proper divisors (93049).

45445487 is an equidigital number, since it uses as much as digits as its factorization.

45445487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93048.

The product of its digits is 358400, while the sum is 41.

The square root of 45445487 is about 6741.3267981904. The cubic root of 45445487 is about 356.8592189197.

The spelling of 45445487 in words is "forty-five million, four hundred forty-five thousand, four hundred eighty-seven".