75212349 has 4 divisors (see below), whose sum is σ = 100283136. Its totient is φ = 50141564.

The previous prime is 75212339. The next prime is 75212363. The reversal of 75212349 is 94321257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94321257 = 3 ⋅31440419.

It is a cyclic number.

It is not a de Polignac number, because 75212349 - 2⁹ = 75211837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75212309) 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, 12535389 + ... + 12535394.

It is an arithmetic number, because the mean of its divisors is an integer number (25070784).

Almost surely, 2^75212349 is an apocalyptic number.

It is an amenable number.

75212349 is a deficient number, since it is larger than the sum of its proper divisors (25070787).

75212349 is a wasteful number, since it uses less digits than its factorization.

75212349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25070786.

The product of its digits is 15120, while the sum is 33.

The square root of 75212349 is about 8672.5053473607. The cubic root of 75212349 is about 422.1139622434.

It can be divided in two parts, 7521 and 2349, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 75212349 in words is "seventy-five million, two hundred twelve thousand, three hundred forty-nine".