45042231 has 32 divisors (see below), whose sum is σ = 70193088. Its totient is φ = 25436160.

The previous prime is 45042229. The next prime is 45042233. The reversal of 45042231 is 13224054.

It is an interprime number because it is at equal distance from previous prime (45042229) and next prime (45042233).

It is not a de Polignac number, because 45042231 - 2¹ = 45042229 is a prime.

It is a super-2 number, since 2×45042231² = 4057605146914722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45042198 and 45042207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45042233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26355 + ... + 28011.

It is an arithmetic number, because the mean of its divisors is an integer number (2193534).

Almost surely, 2^45042231 is an apocalyptic number.

45042231 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

45042231 is a deficient number, since it is larger than the sum of its proper divisors (25150857).

45042231 is a wasteful number, since it uses less digits than its factorization.

45042231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

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

The square root of 45042231 is about 6711.3509072317. The cubic root of 45042231 is about 355.8005631870.

Adding to 45042231 its reverse (13224054), we get a palindrome (58266285).

The spelling of 45042231 in words is "forty-five million, forty-two thousand, two hundred thirty-one".