45685757 has 4 divisors (see below), whose sum is σ = 49200060. Its totient is φ = 42171456.

The previous prime is 45685741. The next prime is 45685763. The reversal of 45685757 is 75758654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75758654 = 2 ⋅37879327.

It can be written as a sum of positive squares in 2 ways, for example, as 4866436 + 40819321 = 2206^2 + 6389^2 .

It is a cyclic number.

It is not a de Polignac number, because 45685757 - 2⁴ = 45685741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45685777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1757132 + ... + 1757157.

It is an arithmetic number, because the mean of its divisors is an integer number (12300015).

Almost surely, 2^45685757 is an apocalyptic number.

It is an amenable number.

45685757 is a deficient number, since it is larger than the sum of its proper divisors (3514303).

45685757 is a wasteful number, since it uses less digits than its factorization.

45685757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514302.

The product of its digits is 1176000, while the sum is 47.

The square root of 45685757 is about 6759.1239817006. The cubic root of 45685757 is about 357.4870179647.

The spelling of 45685757 in words is "forty-five million, six hundred eighty-five thousand, seven hundred fifty-seven".