45217398172251 has 4 divisors (see below), whose sum is σ = 60289864229672. Its totient is φ = 30144932114832.

The previous prime is 45217398172249. The next prime is 45217398172301. The reversal of 45217398172251 is 15227189371254.

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

It is not a de Polignac number, because 45217398172251 - 2¹ = 45217398172249 is a prime.

It is a super-2 number, since 2×45217398172251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45217398172191 and 45217398172200.

It is not an unprimeable number, because it can be changed into a prime (45217398172201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7536233028706 + ... + 7536233028711.

It is an arithmetic number, because the mean of its divisors is an integer number (15072466057418).

Almost surely, 2^{45217398172251} is an apocalyptic number.

45217398172251 is a deficient number, since it is larger than the sum of its proper divisors (15072466057421).

45217398172251 is a wasteful number, since it uses less digits than its factorization.

45217398172251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072466057420.

The product of its digits is 8467200, while the sum is 57.

The spelling of 45217398172251 in words is "forty-five trillion, two hundred seventeen billion, three hundred ninety-eight million, one hundred seventy-two thousand, two hundred fifty-one".