45471531887 has 4 divisors (see below), whose sum is σ = 45921745176. Its totient is φ = 45021318600.

The previous prime is 45471531871. The next prime is 45471531893. The reversal of 45471531887 is 78813517454.

It is a happy number.

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 45471531887 - 2⁴ = 45471531871 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 (45471531827) 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 3 ways as a sum of consecutive naturals, for example, 225106493 + ... + 225106694.

It is an arithmetic number, because the mean of its divisors is an integer number (11480436294).

Almost surely, 2^45471531887 is an apocalyptic number.

45471531887 is a deficient number, since it is larger than the sum of its proper divisors (450213289).

45471531887 is a wasteful number, since it uses less digits than its factorization.

45471531887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450213288.

The product of its digits is 3763200, while the sum is 53.

The spelling of 45471531887 in words is "forty-five billion, four hundred seventy-one million, five hundred thirty-one thousand, eight hundred eighty-seven".