75001329 has 32 divisors (see below), whose sum is σ = 120839040. Its totient is φ = 45700416.

The previous prime is 75001313. The next prime is 75001343. The reversal of 75001329 is 92310057.

It is not a de Polignac number, because 75001329 - 2⁴ = 75001313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75001529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36559 + ... + 38555.

It is an arithmetic number, because the mean of its divisors is an integer number (3776220).

Almost surely, 2^75001329 is an apocalyptic number.

It is an amenable number.

75001329 is a deficient number, since it is larger than the sum of its proper divisors (45837711).

75001329 is a wasteful number, since it uses less digits than its factorization.

75001329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 75001329 is about 8660.3307673553. The cubic root of 75001329 is about 421.7188235740.

The spelling of 75001329 in words is "seventy-five million, one thousand, three hundred twenty-nine".