45339257 has 4 divisors (see below), whose sum is σ = 45358500. Its totient is φ = 45320016.

The previous prime is 45339253. The next prime is 45339277. The reversal of 45339257 is 75293354.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75293354 = 2 ⋅37646677.

It can be written as a sum of positive squares in 2 ways, for example, as 2972176 + 42367081 = 1724^2 + 6509^2 .

It is a cyclic number.

It is not a de Polignac number, because 45339257 - 2² = 45339253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45339257.

It is not an unprimeable number, because it can be changed into a prime (45339253) 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, 5498 + ... + 10995.

It is an arithmetic number, because the mean of its divisors is an integer number (11339625).

Almost surely, 2^45339257 is an apocalyptic number.

45339257 is the 5498-th pentagonal number.

It is an amenable number.

45339257 is a deficient number, since it is larger than the sum of its proper divisors (19243).

45339257 is a wasteful number, since it uses less digits than its factorization.

45339257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19242.

The product of its digits is 113400, while the sum is 38.

The square root of 45339257 is about 6733.4431756717. The cubic root of 45339257 is about 356.5809461023.

The spelling of 45339257 in words is "forty-five million, three hundred thirty-nine thousand, two hundred fifty-seven".