73996553 has 2 divisors, whose sum is σ = 73996554. Its totient is φ = 73996552.

The previous prime is 73996501. The next prime is 73996579. The reversal of 73996553 is 35569937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50879689 + 23116864 = 7133^2 + 4808^2 .

It is a cyclic number.

It is not a de Polignac number, because 73996553 - 2⁸ = 73996297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 73996498 and 73996507.

It is not a weakly prime, because it can be changed into another prime (73996253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36998276 + 36998277.

It is an arithmetic number, because the mean of its divisors is an integer number (36998277).

Almost surely, 2^73996553 is an apocalyptic number.

It is an amenable number.

73996553 is a deficient number, since it is larger than the sum of its proper divisors (1).

73996553 is an equidigital number, since it uses as much as digits as its factorization.

73996553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 765450, while the sum is 47.

The square root of 73996553 is about 8602.1249119040. The cubic root of 73996553 is about 419.8271265113.

The spelling of 73996553 in words is "seventy-three million, nine hundred ninety-six thousand, five hundred fifty-three".