75479 has 2 divisors, whose sum is σ = 75480. Its totient is φ = 75478.

The previous prime is 75437. The next prime is 75503. The reversal of 75479 is 97457.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75479 - 2⁸ = 75223 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37739 + 37740.

It is an arithmetic number, because the mean of its divisors is an integer number (37740).

2⁷⁵⁴⁷⁹ is an apocalyptic number.

75479 is a deficient number, since it is larger than the sum of its proper divisors (1).

75479 is an equidigital number, since it uses as much as digits as its factorization.

75479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 32.

The square root of 75479 is about 274.7344172105. The cubic root of 75479 is about 42.2612215329.

The spelling of 75479 in words is "seventy-five thousand, four hundred seventy-nine".