47507645 has 4 divisors (see below), whose sum is σ = 57009180. Its totient is φ = 38006112.

The previous prime is 47507641. The next prime is 47507651. The reversal of 47507645 is 54670574.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36445369 + 11062276 = 6037^2 + 3326^2 .

It is a cyclic number.

It is not a de Polignac number, because 47507645 - 2² = 47507641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47507599 and 47507608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47507641) 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, 4750760 + ... + 4750769.

It is an arithmetic number, because the mean of its divisors is an integer number (14252295).

Almost surely, 2^47507645 is an apocalyptic number.

It is an amenable number.

47507645 is a deficient number, since it is larger than the sum of its proper divisors (9501535).

47507645 is an equidigital number, since it uses as much as digits as its factorization.

47507645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501534.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 47507645 is about 6892.5789803237. The cubic root of 47507645 is about 362.1772505793.

The spelling of 47507645 in words is "forty-seven million, five hundred seven thousand, six hundred forty-five".