75216469 has 2 divisors, whose sum is σ = 75216470. Its totient is φ = 75216468.

The previous prime is 75216451. The next prime is 75216511. The reversal of 75216469 is 96461257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61622500 + 13593969 = 7850^2 + 3687^2 .

It is a cyclic number.

It is not a de Polignac number, because 75216469 - 2¹⁵ = 75183701 is a prime.

It is a super-2 number, since 2×75216469² = 11315034417655922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75216409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37608234 + 37608235.

It is an arithmetic number, because the mean of its divisors is an integer number (37608235).

Almost surely, 2^75216469 is an apocalyptic number.

It is an amenable number.

75216469 is a deficient number, since it is larger than the sum of its proper divisors (1).

75216469 is an equidigital number, since it uses as much as digits as its factorization.

75216469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 75216469 is about 8672.7428763915. The cubic root of 75216469 is about 422.1216696558.

The spelling of 75216469 in words is "seventy-five million, two hundred sixteen thousand, four hundred sixty-nine".