45543643 has 2 divisors, whose sum is σ = 45543644. Its totient is φ = 45543642.

The previous prime is 45543607. The next prime is 45543649. The reversal of 45543643 is 34634554.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45543643 is a prime.

It is a super-2 number, since 2×45543643² = 4148446835422898, which contains 22 as substring.

It is equal to p_2749192 and since 45543643 and 2749192 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 45543599 and 45543608.

It is not a weakly prime, because it can be changed into another prime (45543649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22771821 + 22771822.

It is an arithmetic number, because the mean of its divisors is an integer number (22771822).

Almost surely, 2^45543643 is an apocalyptic number.

45543643 is a deficient number, since it is larger than the sum of its proper divisors (1).

45543643 is an equidigital number, since it uses as much as digits as its factorization.

45543643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 34.

The square root of 45543643 is about 6748.6030406300. The cubic root of 45543643 is about 357.1159564424.

The spelling of 45543643 in words is "forty-five million, five hundred forty-three thousand, six hundred forty-three".