45386981 has 4 divisors (see below), whose sum is σ = 47360352. Its totient is φ = 43413612.

The previous prime is 45386941. The next prime is 45386987. The reversal of 45386981 is 18968354.

45386981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45386981 - 2⁶ = 45386917 is a prime.

It is a super-2 number, since 2×45386981² = 4119956088588722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45386987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986651 + ... + 986696.

It is an arithmetic number, because the mean of its divisors is an integer number (11840088).

Almost surely, 2^45386981 is an apocalyptic number.

It is an amenable number.

45386981 is a deficient number, since it is larger than the sum of its proper divisors (1973371).

45386981 is a wasteful number, since it uses less digits than its factorization.

45386981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973370.

The product of its digits is 207360, while the sum is 44.

The square root of 45386981 is about 6736.9860471876. The cubic root of 45386981 is about 356.7060143312.

The spelling of 45386981 in words is "forty-five million, three hundred eighty-six thousand, nine hundred eighty-one".