75505903 has 4 divisors (see below), whose sum is σ = 82370088. Its totient is φ = 68641720.

The previous prime is 75505897. The next prime is 75505919. The reversal of 75505903 is 30950557.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75505903 is a prime.

It is a super-2 number, since 2×75505903² = 11402282775690818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75505933) 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, 3432076 + ... + 3432097.

It is an arithmetic number, because the mean of its divisors is an integer number (20592522).

Almost surely, 2^75505903 is an apocalyptic number.

75505903 is a deficient number, since it is larger than the sum of its proper divisors (6864185).

75505903 is a wasteful number, since it uses less digits than its factorization.

75505903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864184.

The product of its (nonzero) digits is 23625, while the sum is 34.

The square root of 75505903 is about 8689.4132713320. The cubic root of 75505903 is about 422.6624199596.

The spelling of 75505903 in words is "seventy-five million, five hundred five thousand, nine hundred three".