45478757 has 12 divisors (see below), whose sum is σ = 49887396. Its totient is φ = 41314560.

The previous prime is 45478753. The next prime is 45478787. The reversal of 45478757 is 75787454.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 306916 + 45171841 = 554^2 + 6721^2 .

It is not a de Polignac number, because 45478757 - 2² = 45478753 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45478753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12707 + ... + 15887.

It is an arithmetic number, because the mean of its divisors is an integer number (4157283).

Almost surely, 2^45478757 is an apocalyptic number.

It is an amenable number.

45478757 is a deficient number, since it is larger than the sum of its proper divisors (4408639).

45478757 is a wasteful number, since it uses less digits than its factorization.

45478757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256 (or 3227 counting only the distinct ones).

The product of its digits is 1097600, while the sum is 47.

The square root of 45478757 is about 6743.7939618586. The cubic root of 45478757 is about 356.9462815443.

The spelling of 45478757 in words is "forty-five million, four hundred seventy-eight thousand, seven hundred fifty-seven".