47211251 has 4 divisors (see below), whose sum is σ = 47227632. Its totient is φ = 47194872.

The previous prime is 47211179. The next prime is 47211253. The reversal of 47211251 is 15211274.

47211251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47211251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47211253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2591 + ... + 10056.

It is an arithmetic number, because the mean of its divisors is an integer number (11806908).

Almost surely, 2^47211251 is an apocalyptic number.

47211251 is a deficient number, since it is larger than the sum of its proper divisors (16381).

47211251 is a wasteful number, since it uses less digits than its factorization.

47211251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16380.

The product of its digits is 560, while the sum is 23.

The square root of 47211251 is about 6871.0443893196. The cubic root of 47211251 is about 361.4224865642.

Adding to 47211251 its sum of digits (23), we get a palindrome (47211274).

The spelling of 47211251 in words is "forty-seven million, two hundred eleven thousand, two hundred fifty-one".