45220431 has 4 divisors (see below), whose sum is σ = 60293912. Its totient is φ = 30146952.

The previous prime is 45220429. The next prime is 45220433. The reversal of 45220431 is 13402254.

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

It is an interprime number because it is at equal distance from previous prime (45220429) and next prime (45220433).

It is not a de Polignac number, because 45220431 - 2¹ = 45220429 is a prime.

It is a super-2 number, since 2×45220431² = 4089774759651522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45220398 and 45220407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45220433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7536736 + ... + 7536741.

It is an arithmetic number, because the mean of its divisors is an integer number (15073478).

Almost surely, 2^45220431 is an apocalyptic number.

45220431 is a deficient number, since it is larger than the sum of its proper divisors (15073481).

45220431 is a wasteful number, since it uses less digits than its factorization.

45220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15073480.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 45220431 is about 6724.6138179081. The cubic root of 45220431 is about 356.2691621580.

Adding to 45220431 its reverse (13402254), we get a palindrome (58622685).

The spelling of 45220431 in words is "forty-five million, two hundred twenty thousand, four hundred thirty-one".