73215469 has 2 divisors, whose sum is σ = 73215470. Its totient is φ = 73215468.

The previous prime is 73215449. The next prime is 73215473. The reversal of 73215469 is 96451237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65448100 + 7767369 = 8090^2 + 2787^2 .

It is an emirp because it is prime and its reverse (96451237) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73215469 - 2⁵ = 73215437 is a prime.

It is a super-2 number, since 2×73215469² = 10721009801779922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73215449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36607734 + 36607735.

It is an arithmetic number, because the mean of its divisors is an integer number (36607735).

Almost surely, 2^73215469 is an apocalyptic number.

It is an amenable number.

73215469 is a deficient number, since it is larger than the sum of its proper divisors (1).

73215469 is an equidigital number, since it uses as much as digits as its factorization.

73215469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 73215469 is about 8556.6038239479. The cubic root of 73215469 is about 418.3447111854.

The spelling of 73215469 in words is "seventy-three million, two hundred fifteen thousand, four hundred sixty-nine".