75209023 has 4 divisors (see below), whose sum is σ = 75707248. Its totient is φ = 74710800.

The previous prime is 75208997. The next prime is 75209033. The reversal of 75209023 is 32090257.

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

It is a cyclic number.

It is not a de Polignac number, because 75209023 - 2¹³ = 75200831 is a prime.

It is a super-2 number, since 2×75209023² = 11312794281229058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75208982 and 75209000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75209033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248886 + ... + 249187.

It is an arithmetic number, because the mean of its divisors is an integer number (18926812).

Almost surely, 2^75209023 is an apocalyptic number.

75209023 is a deficient number, since it is larger than the sum of its proper divisors (498225).

75209023 is a wasteful number, since it uses less digits than its factorization.

75209023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498224.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 75209023 is about 8672.3135898098. The cubic root of 75209023 is about 422.1077399863.

The spelling of 75209023 in words is "seventy-five million, two hundred nine thousand, twenty-three".