47813237 has 4 divisors (see below), whose sum is σ = 48024096. Its totient is φ = 47602380.

The previous prime is 47813201. The next prime is 47813239. The reversal of 47813237 is 73231874.

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 not a de Polignac number, because 47813237 - 2⁸ = 47812981 is a prime.

It is a super-2 number, since 2×47813237² = 4572211264836338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47813197 and 47813206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47813239) 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, 105089 + ... + 105542.

It is an arithmetic number, because the mean of its divisors is an integer number (12006024).

Almost surely, 2^47813237 is an apocalyptic number.

It is an amenable number.

47813237 is a deficient number, since it is larger than the sum of its proper divisors (210859).

47813237 is a wasteful number, since it uses less digits than its factorization.

47813237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210858.

The product of its digits is 28224, while the sum is 35.

The square root of 47813237 is about 6914.7116353468. The cubic root of 47813237 is about 362.9521574561.

The spelling of 47813237 in words is "forty-seven million, eight hundred thirteen thousand, two hundred thirty-seven".