45555214181 has 2 divisors, whose sum is σ = 45555214182. Its totient is φ = 45555214180.

The previous prime is 45555214157. The next prime is 45555214223. The reversal of 45555214181 is 18141255554.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37429093156 + 8126121025 = 193466^2 + 90145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45555214181 is a prime.

It is a super-2 number, since 2×45555214181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45555214121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22777607090 + 22777607091.

It is an arithmetic number, because the mean of its divisors is an integer number (22777607091).

Almost surely, 2^45555214181 is an apocalyptic number.

It is an amenable number.

45555214181 is a deficient number, since it is larger than the sum of its proper divisors (1).

45555214181 is an equidigital number, since it uses as much as digits as its factorization.

45555214181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160000, while the sum is 41.

The spelling of 45555214181 in words is "forty-five billion, five hundred fifty-five million, two hundred fourteen thousand, one hundred eighty-one".