47211540 has 24 divisors (see below), whose sum is σ = 132192480. Its totient is φ = 12589728.

The previous prime is 47211539. The next prime is 47211551. The reversal of 47211540 is 4511274.

It is a self number, because there is not a number n which added to its sum of digits gives 47211540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393370 + ... + 393489.

It is an arithmetic number, because the mean of its divisors is an integer number (5508020).

Almost surely, 2^47211540 is an apocalyptic number.

It is an amenable number.

47211540 is an abundant number, since it is smaller than the sum of its proper divisors (84980940).

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

47211540 is a wasteful number, since it uses less digits than its factorization.

47211540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786871 (or 786869 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 47211540 is about 6871.0654195692. The cubic root of 47211540 is about 361.4232240359.

The spelling of 47211540 in words is "forty-seven million, two hundred eleven thousand, five hundred forty".