75421223 has 2 divisors, whose sum is σ = 75421224. Its totient is φ = 75421222.

The previous prime is 75421219. The next prime is 75421237. The reversal of 75421223 is 32212457.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75421223 - 2² = 75421219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75421192 and 75421201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75421273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37710611 + 37710612.

It is an arithmetic number, because the mean of its divisors is an integer number (37710612).

Almost surely, 2^75421223 is an apocalyptic number.

75421223 is a deficient number, since it is larger than the sum of its proper divisors (1).

75421223 is an equidigital number, since it uses as much as digits as its factorization.

75421223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 26.

The square root of 75421223 is about 8684.5393084492. The cubic root of 75421223 is about 422.5043553115.

The spelling of 75421223 in words is "seventy-five million, four hundred twenty-one thousand, two hundred twenty-three".