75132979 has 4 divisors (see below), whose sum is σ = 79552584. Its totient is φ = 70713376.

The previous prime is 75132943. The next prime is 75132983. The reversal of 75132979 is 97923157.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75132979 - 2¹¹ = 75130931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75132989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2209777 + ... + 2209810.

It is an arithmetic number, because the mean of its divisors is an integer number (19888146).

Almost surely, 2^75132979 is an apocalyptic number.

75132979 is a deficient number, since it is larger than the sum of its proper divisors (4419605).

75132979 is a wasteful number, since it uses less digits than its factorization.

75132979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419604.

The product of its digits is 119070, while the sum is 43.

The square root of 75132979 is about 8667.9281838280. The cubic root of 75132979 is about 421.9654273392.

The spelling of 75132979 in words is "seventy-five million, one hundred thirty-two thousand, nine hundred seventy-nine".