47661145 has 16 divisors (see below), whose sum is σ = 65554560. Its totient is φ = 32586624.

The previous prime is 47661113. The next prime is 47661161. The reversal of 47661145 is 54116674.

It is not a de Polignac number, because 47661145 - 2⁵ = 47661113 is a prime.

It is a super-2 number, since 2×47661145² = 4543169485422050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47661145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11469 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (4097160).

Almost surely, 2^47661145 is an apocalyptic number.

It is an amenable number.

47661145 is a deficient number, since it is larger than the sum of its proper divisors (17893415).

47661145 is a wasteful number, since it uses less digits than its factorization.

47661145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984.

The product of its digits is 20160, while the sum is 34.

The square root of 47661145 is about 6903.7051646199. The cubic root of 47661145 is about 362.5669032282.

The spelling of 47661145 in words is "forty-seven million, six hundred sixty-one thousand, one hundred forty-five".