47853121 has 4 divisors (see below), whose sum is σ = 48218544. Its totient is φ = 47487700.

The previous prime is 47853089. The next prime is 47853137. The reversal of 47853121 is 12135874.

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 47853121 - 2⁵ = 47853089 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47853151) 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, 182515 + ... + 182776.

It is an arithmetic number, because the mean of its divisors is an integer number (12054636).

Almost surely, 2^47853121 is an apocalyptic number.

It is an amenable number.

47853121 is a deficient number, since it is larger than the sum of its proper divisors (365423).

47853121 is a wasteful number, since it uses less digits than its factorization.

47853121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365422.

The product of its digits is 6720, while the sum is 31.

The square root of 47853121 is about 6917.5950300664. The cubic root of 47853121 is about 363.0530497439.

Adding to 47853121 its reverse (12135874), we get a palindrome (59988995).

It can be divided in two parts, 47853 and 121, that added together give a palindrome (47974).

The spelling of 47853121 in words is "forty-seven million, eight hundred fifty-three thousand, one hundred twenty-one".