75471149 has 16 divisors (see below), whose sum is σ = 84268800. Its totient is φ = 67144896.

The previous prime is 75471131. The next prime is 75471161. The reversal of 75471149 is 94117457.

It is not a de Polignac number, because 75471149 - 2¹⁶ = 75405613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75471169) 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, 43307 + ... + 45015.

It is an arithmetic number, because the mean of its divisors is an integer number (5266800).

Almost surely, 2^75471149 is an apocalyptic number.

75471149 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

75471149 is a deficient number, since it is larger than the sum of its proper divisors (8797651).

75471149 is a wasteful number, since it uses less digits than its factorization.

With its successor (75471150) it forms an eRAP, since the sums of their prime factors are consecutive (1844 and 1845).

75471149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844.

The product of its digits is 35280, while the sum is 38.

The square root of 75471149 is about 8687.4132513654. The cubic root of 75471149 is about 422.5975620547.

The spelling of 75471149 in words is "seventy-five million, four hundred seventy-one thousand, one hundred forty-nine".