45513857 has 4 divisors (see below), whose sum is σ = 45529536. Its totient is φ = 45498180.

The previous prime is 45513791. The next prime is 45513863. The reversal of 45513857 is 75831554.

45513857 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, and also an emirpimes, since its reverse is a distinct semiprime: 75831554 = 2 ⋅37915777.

It is a cyclic number.

It is not a de Polignac number, because 45513857 - 2²⁴ = 28736641 is a prime.

It is a super-2 number, since 2×45513857² = 4143022358032898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45513857.

It is not an unprimeable number, because it can be changed into a prime (45513877) 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, 2069 + ... + 9762.

It is an arithmetic number, because the mean of its divisors is an integer number (11382384).

Almost surely, 2^45513857 is an apocalyptic number.

It is an amenable number.

45513857 is a deficient number, since it is larger than the sum of its proper divisors (15679).

45513857 is a wasteful number, since it uses less digits than its factorization.

45513857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15678.

The product of its digits is 84000, while the sum is 38.

The square root of 45513857 is about 6746.3958526016. The cubic root of 45513857 is about 357.0380869899.

The spelling of 45513857 in words is "forty-five million, five hundred thirteen thousand, eight hundred fifty-seven".