47525813 has 4 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 47151468.

The previous prime is 47525801. The next prime is 47525831. The reversal of 47525813 is 31852574.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47525813 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 (47525833) 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, 186983 + ... + 187236.

It is an arithmetic number, because the mean of its divisors is an integer number (11975040).

Almost surely, 2^47525813 is an apocalyptic number.

It is an amenable number.

47525813 is a deficient number, since it is larger than the sum of its proper divisors (374347).

47525813 is a wasteful number, since it uses less digits than its factorization.

47525813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374346.

The product of its digits is 33600, while the sum is 35.

The square root of 47525813 is about 6893.8967935414. The cubic root of 47525813 is about 362.2234129579.

The spelling of 47525813 in words is "forty-seven million, five hundred twenty-five thousand, eight hundred thirteen".