75346445 has 4 divisors (see below), whose sum is σ = 90415740. Its totient is φ = 60277152.

The previous prime is 75346429. The next prime is 75346451. The reversal of 75346445 is 54464357.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54464357 = 109 ⋅499673.

It can be written as a sum of positive squares in 2 ways, for example, as 54671236 + 20675209 = 7394^2 + 4547^2 .

It is a cyclic number.

It is not a de Polignac number, because 75346445 - 2⁴ = 75346429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75346399 and 75346408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7534640 + ... + 7534649.

It is an arithmetic number, because the mean of its divisors is an integer number (22603935).

Almost surely, 2^75346445 is an apocalyptic number.

It is an amenable number.

75346445 is a deficient number, since it is larger than the sum of its proper divisors (15069295).

75346445 is a wasteful number, since it uses less digits than its factorization.

75346445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15069294.

The product of its digits is 201600, while the sum is 38.

The square root of 75346445 is about 8680.2330037851. The cubic root of 75346445 is about 422.3646754499.

The spelling of 75346445 in words is "seventy-five million, three hundred forty-six thousand, four hundred forty-five".