75411997 has 4 divisors (see below), whose sum is σ = 77251356. Its totient is φ = 73572640.

The previous prime is 75411989. The next prime is 75412013. The reversal of 75411997 is 79911457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79911457 = 193 ⋅414049.

It can be written as a sum of positive squares in 2 ways, for example, as 9947716 + 65464281 = 3154^2 + 8091^2 .

It is a cyclic number.

It is not a de Polignac number, because 75411997 - 2³ = 75411989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75411907) 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, 919618 + ... + 919699.

It is an arithmetic number, because the mean of its divisors is an integer number (19312839).

Almost surely, 2^75411997 is an apocalyptic number.

It is an amenable number.

75411997 is a deficient number, since it is larger than the sum of its proper divisors (1839359).

75411997 is a wasteful number, since it uses less digits than its factorization.

75411997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839358.

The product of its digits is 79380, while the sum is 43.

The square root of 75411997 is about 8684.0081183748. The cubic root of 75411997 is about 422.4871268092.

The spelling of 75411997 in words is "seventy-five million, four hundred eleven thousand, nine hundred ninety-seven".