45539257 has 4 divisors (see below), whose sum is σ = 47936080. Its totient is φ = 43142436.

The previous prime is 45539237. The next prime is 45539261. The reversal of 45539257 is 75293554.

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 45539257 - 2⁷ = 45539129 is a prime.

It is a super-2 number, since 2×45539257² = 4147647856224098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45539227) 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, 1198383 + ... + 1198420.

It is an arithmetic number, because the mean of its divisors is an integer number (11984020).

Almost surely, 2^45539257 is an apocalyptic number.

It is an amenable number.

45539257 is a deficient number, since it is larger than the sum of its proper divisors (2396823).

45539257 is a wasteful number, since it uses less digits than its factorization.

45539257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396822.

The product of its digits is 189000, while the sum is 40.

The square root of 45539257 is about 6748.2780766652. The cubic root of 45539257 is about 357.1044922675.

It can be divided in two parts, 45539 and 257, that added together give a square (45796 = 214²).

The spelling of 45539257 in words is "forty-five million, five hundred thirty-nine thousand, two hundred fifty-seven".