47311540 has 24 divisors (see below), whose sum is σ = 101779272. Its totient is φ = 18462720.

The previous prime is 47311507. The next prime is 47311541. The reversal of 47311540 is 4511374.

It can be written as a sum of positive squares in 4 ways, for example, as 5035536 + 42276004 = 2244^2 + 6502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47311541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28029 + ... + 29668.

It is an arithmetic number, because the mean of its divisors is an integer number (4240803).

Almost surely, 2^47311540 is an apocalyptic number.

It is an amenable number.

47311540 is an abundant number, since it is smaller than the sum of its proper divisors (54467732).

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

47311540 is a wasteful number, since it uses less digits than its factorization.

47311540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57747 (or 57745 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 47311540 is about 6878.3384621578. The cubic root of 47311540 is about 361.6782240804.

The spelling of 47311540 in words is "forty-seven million, three hundred eleven thousand, five hundred forty".