45503947 has 4 divisors (see below), whose sum is σ = 45603976. Its totient is φ = 45403920.

The previous prime is 45503923. The next prime is 45503957. The reversal of 45503947 is 74930554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74930554 = 2 ⋅37465277.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45503947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45503957) 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, 49329 + ... + 50242.

It is an arithmetic number, because the mean of its divisors is an integer number (11400994).

Almost surely, 2^45503947 is an apocalyptic number.

45503947 is a deficient number, since it is larger than the sum of its proper divisors (100029).

45503947 is an equidigital number, since it uses as much as digits as its factorization.

45503947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100028.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 45503947 is about 6745.6613463766. The cubic root of 45503947 is about 357.0121717741.

The spelling of 45503947 in words is "forty-five million, five hundred three thousand, nine hundred forty-seven".