45851881 has 2 divisors, whose sum is σ = 45851882. Its totient is φ = 45851880.

The previous prime is 45851867. The next prime is 45851887. The reversal of 45851881 is 18815854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 16475481 = 5420^2 + 4059^2 .

It is a cyclic number.

It is not a de Polignac number, because 45851881 - 2⁷ = 45851753 is a prime.

It is a super-2 number, since 2×45851881² = 4204789982476322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45851887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22925940 + 22925941.

It is an arithmetic number, because the mean of its divisors is an integer number (22925941).

Almost surely, 2^45851881 is an apocalyptic number.

It is an amenable number.

45851881 is a deficient number, since it is larger than the sum of its proper divisors (1).

45851881 is an equidigital number, since it uses as much as digits as its factorization.

45851881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51200, while the sum is 40.

The square root of 45851881 is about 6771.4017012728. The cubic root of 45851881 is about 357.9197957091.

The spelling of 45851881 in words is "forty-five million, eight hundred fifty-one thousand, eight hundred eighty-one".