45850181 has 4 divisors (see below), whose sum is σ = 49377132. Its totient is φ = 42323232.

The previous prime is 45850171. The next prime is 45850193. The reversal of 45850181 is 18105854.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26357956 + 19492225 = 5134^2 + 4415^2 .

It is a cyclic number.

It is not a de Polignac number, because 45850181 - 2⁶ = 45850117 is a prime.

It is a super-2 number, since 2×45850181² = 4204478195465522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45850121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1763456 + ... + 1763481.

It is an arithmetic number, because the mean of its divisors is an integer number (12344283).

Almost surely, 2^45850181 is an apocalyptic number.

It is an amenable number.

45850181 is a deficient number, since it is larger than the sum of its proper divisors (3526951).

45850181 is a wasteful number, since it uses less digits than its factorization.

45850181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526950.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 45850181 is about 6771.2761721850. The cubic root of 45850181 is about 357.9153722542.

The spelling of 45850181 in words is "forty-five million, eight hundred fifty thousand, one hundred eighty-one".