45748681 has 4 divisors (see below), whose sum is σ = 49907664. Its totient is φ = 41589700.

The previous prime is 45748643. The next prime is 45748691. The reversal of 45748681 is 18684754.

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 45748681 - 2⁷ = 45748553 is a prime.

It is a super-2 number, since 2×45748681² = 4185883626479522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45748601) 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, 2079475 + ... + 2079496.

It is an arithmetic number, because the mean of its divisors is an integer number (12476916).

Almost surely, 2^45748681 is an apocalyptic number.

It is an amenable number.

45748681 is a deficient number, since it is larger than the sum of its proper divisors (4158983).

45748681 is a wasteful number, since it uses less digits than its factorization.

45748681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158982.

The product of its digits is 215040, while the sum is 43.

The square root of 45748681 is about 6763.7771252459. Note that the first 3 decimals coincide. The cubic root of 45748681 is about 357.6510675875.

The spelling of 45748681 in words is "forty-five million, seven hundred forty-eight thousand, six hundred eighty-one".