45745781 has 8 divisors (see below), whose sum is σ = 48113664. Its totient is φ = 43409520.

The previous prime is 45745771. The next prime is 45745783. The reversal of 45745781 is 18754754.

45745781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45745781 - 2¹⁰ = 45744757 is a prime.

It is a super-2 number, since 2×45745781² = 4185352958599922, 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 (45745783) 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 7 ways as a sum of consecutive naturals, for example, 4910 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (6014208).

Almost surely, 2^45745781 is an apocalyptic number.

It is an amenable number.

45745781 is a deficient number, since it is larger than the sum of its proper divisors (2367883).

45745781 is a wasteful number, since it uses less digits than its factorization.

45745781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15811.

The product of its digits is 156800, while the sum is 41.

The square root of 45745781 is about 6763.5627445896. The cubic root of 45745781 is about 357.6435102840.

The spelling of 45745781 in words is "forty-five million, seven hundred forty-five thousand, seven hundred eighty-one".