75471147 has 12 divisors (see below), whose sum is σ = 109873920. Its totient is φ = 49917168.

The previous prime is 75471131. The next prime is 75471161. The reversal of 75471147 is 74117457.

It is not a de Polignac number, because 75471147 - 2⁴ = 75471131 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (75471107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31872 + ... + 34157.

It is an arithmetic number, because the mean of its divisors is an integer number (9156160).

Almost surely, 2^75471147 is an apocalyptic number.

75471147 is a deficient number, since it is larger than the sum of its proper divisors (34402773).

75471147 is a wasteful number, since it uses less digits than its factorization.

75471147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66162 (or 66159 counting only the distinct ones).

The product of its digits is 27440, while the sum is 36.

The square root of 75471147 is about 8687.4131362564. The cubic root of 75471147 is about 422.5975583217.

The spelling of 75471147 in words is "seventy-five million, four hundred seventy-one thousand, one hundred forty-seven".