75046421 has 2 divisors, whose sum is σ = 75046422. Its totient is φ = 75046420.

The previous prime is 75046399. The next prime is 75046429. The reversal of 75046421 is 12464057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52852900 + 22193521 = 7270^2 + 4711^2 .

It is a cyclic number.

It is not a de Polignac number, because 75046421 - 2¹⁴ = 75030037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75046429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37523210 + 37523211.

It is an arithmetic number, because the mean of its divisors is an integer number (37523211).

Almost surely, 2^75046421 is an apocalyptic number.

It is an amenable number.

75046421 is a deficient number, since it is larger than the sum of its proper divisors (1).

75046421 is an equidigital number, since it uses as much as digits as its factorization.

75046421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 75046421 is about 8662.9337409448. The cubic root of 75046421 is about 421.8033213457.

The spelling of 75046421 in words is "seventy-five million, forty-six thousand, four hundred twenty-one".