45421231 has 8 divisors (see below), whose sum is σ = 46972928. Its totient is φ = 43875000.

The previous prime is 45421219. The next prime is 45421241. The reversal of 45421231 is 13212454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45421231 - 2¹⁵ = 45388463 is a prime.

It is a super-2 number, since 2×45421231² = 4126176451110722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45421241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22306 + ... + 24256.

It is an arithmetic number, because the mean of its divisors is an integer number (5871616).

Almost surely, 2^45421231 is an apocalyptic number.

45421231 is a deficient number, since it is larger than the sum of its proper divisors (1551697).

45421231 is a wasteful number, since it uses less digits than its factorization.

45421231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733.

The product of its digits is 960, while the sum is 22.

The square root of 45421231 is about 6739.5275056936. The cubic root of 45421231 is about 356.7957178019.

Adding to 45421231 its reverse (13212454), we get a palindrome (58633685).

The spelling of 45421231 in words is "forty-five million, four hundred twenty-one thousand, two hundred thirty-one".