75715049 has 4 divisors (see below), whose sum is σ = 75761364. Its totient is φ = 75668736.

The previous prime is 75715043. The next prime is 75715067. The reversal of 75715049 is 94051757.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94051757 = 1499 ⋅62743.

It can be written as a sum of positive squares in 2 ways, for example, as 42445225 + 33269824 = 6515^2 + 5768^2 .

It is a cyclic number.

It is not a de Polignac number, because 75715049 - 2⁴ = 75715033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75715043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20612 + ... + 24005.

It is an arithmetic number, because the mean of its divisors is an integer number (18940341).

Almost surely, 2^75715049 is an apocalyptic number.

It is an amenable number.

75715049 is a deficient number, since it is larger than the sum of its proper divisors (46315).

75715049 is a wasteful number, since it uses less digits than its factorization.

75715049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46314.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 75715049 is about 8701.4394786150. The cubic root of 75715049 is about 423.0523085090.

The spelling of 75715049 in words is "seventy-five million, seven hundred fifteen thousand, forty-nine".