47523845 has 24 divisors (see below), whose sum is σ = 60981336. Its totient is φ = 35546112.

The previous prime is 47523767. The next prime is 47523859. The reversal of 47523845 is 54832574.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1256641 + 46267204 = 1121^2 + 6802^2 .

It is a de Polignac number, because none of the positive numbers 2^k-47523845 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47523799 and 47523808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203849 + ... + 204081.

It is an arithmetic number, because the mean of its divisors is an integer number (2540889).

Almost surely, 2^47523845 is an apocalyptic number.

It is an amenable number.

47523845 is a deficient number, since it is larger than the sum of its proper divisors (13457491).

47523845 is a wasteful number, since it uses less digits than its factorization.

47523845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 370 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 47523845 is about 6893.7540571158. The cubic root of 47523845 is about 362.2184131099.

The spelling of 47523845 in words is "forty-seven million, five hundred twenty-three thousand, eight hundred forty-five".