45457 has 4 divisors (see below), whose sum is σ = 45936. Its totient is φ = 44980.

The previous prime is 45439. The next prime is 45481. The reversal of 45457 is 75454.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45457 - 2⁷ = 45329 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (45427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43 + ... + 304.

It is an arithmetic number, because the mean of its divisors is an integer number (11484).

2⁴⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

45457 is a deficient number, since it is larger than the sum of its proper divisors (479).

45457 is a wasteful number, since it uses less digits than its factorization.

45457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 2800, while the sum is 25.

The square root of 45457 is about 213.2064726972. The cubic root of 45457 is about 35.6889351529.

It can be divided in two parts, 454 and 57, that multiplied together give a triangular number (25878 = T₂₂₇).

The spelling of 45457 in words is "forty-five thousand, four hundred fifty-seven".