47211516 has 72 divisors (see below), whose sum is σ = 137867184. Its totient is φ = 13463040.

The previous prime is 47211487. The next prime is 47211517. The reversal of 47211516 is 61511274.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 47211516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47211517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3226 + ... + 10238.

It is an arithmetic number, because the mean of its divisors is an integer number (1914822).

Almost surely, 2^47211516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47211516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68933592).

47211516 is an abundant number, since it is smaller than the sum of its proper divisors (90655668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47211516 is a wasteful number, since it uses less digits than its factorization.

47211516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7051 (or 7046 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 47211516 is about 6871.0636731150. The cubic root of 47211516 is about 361.4231627927.

The spelling of 47211516 in words is "forty-seven million, two hundred eleven thousand, five hundred sixteen".