45843521 has 2 divisors, whose sum is σ = 45843522. Its totient is φ = 45843520.

The previous prime is 45843517. The next prime is 45843527. The reversal of 45843521 is 12534854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41783296 + 4060225 = 6464^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 45843521 - 2² = 45843517 is a prime.

It is equal to p_2766146 and since 45843521 and 2766146 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (45843527) 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 as a sum of consecutive naturals, namely, 22921760 + 22921761.

It is an arithmetic number, because the mean of its divisors is an integer number (22921761).

Almost surely, 2^45843521 is an apocalyptic number.

It is an amenable number.

45843521 is a deficient number, since it is larger than the sum of its proper divisors (1).

45843521 is an equidigital number, since it uses as much as digits as its factorization.

45843521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 32.

The square root of 45843521 is about 6770.7843711050. The cubic root of 45843521 is about 357.8980416661.

It can be divided in two parts, 45843 and 521, that added together give a palindrome (46364).

The spelling of 45843521 in words is "forty-five million, eight hundred forty-three thousand, five hundred twenty-one".