47211081 has 16 divisors (see below), whose sum is σ = 64271424. Its totient is φ = 30818304.

The previous prime is 47211053. The next prime is 47211089. The reversal of 47211081 is 18011274.

47211081 = 139² + 140² + ... + 524².

It is not a de Polignac number, because 47211081 - 2¹¹ = 47209033 is a prime.

It is a super-3 number, since 3×47211081³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (47211089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38185 + ... + 39401.

It is an arithmetic number, because the mean of its divisors is an integer number (4016964).

Almost surely, 2^47211081 is an apocalyptic number.

It is an amenable number.

47211081 is a deficient number, since it is larger than the sum of its proper divisors (17060343).

47211081 is a wasteful number, since it uses less digits than its factorization.

47211081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 47211081 is about 6871.0320185544. The cubic root of 47211081 is about 361.4220527559.

The spelling of 47211081 in words is "forty-seven million, two hundred eleven thousand, eighty-one".