45981953 has 2 divisors, whose sum is σ = 45981954. Its totient is φ = 45981952.

The previous prime is 45981941. The next prime is 45981973. The reversal of 45981953 is 35918954.

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., 32855824 + 13126129 = 5732^2 + 3623^2 .

It is a cyclic number.

It is not a de Polignac number, because 45981953 - 2⁴ = 45981937 is a prime.

It is a super-2 number, since 2×45981953² = 4228680003388418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45981973) 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, 22990976 + 22990977.

It is an arithmetic number, because the mean of its divisors is an integer number (22990977).

Almost surely, 2^45981953 is an apocalyptic number.

It is an amenable number.

45981953 is a deficient number, since it is larger than the sum of its proper divisors (1).

45981953 is an equidigital number, since it uses as much as digits as its factorization.

45981953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 44.

The square root of 45981953 is about 6780.9994101165. Note that the first 3 decimals coincide. The cubic root of 45981953 is about 358.2579235341.

The spelling of 45981953 in words is "forty-five million, nine hundred eighty-one thousand, nine hundred fifty-three".