73078553 has 2 divisors, whose sum is σ = 73078554. Its totient is φ = 73078552.

The previous prime is 73078517. The next prime is 73078583. The reversal of 73078553 is 35587037.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45589504 + 27489049 = 6752^2 + 5243^2 .

It is a cyclic number.

It is not a de Polignac number, because 73078553 - 2⁸ = 73078297 is a prime.

It is not a weakly prime, because it can be changed into another prime (73078583) 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, 36539276 + 36539277.

It is an arithmetic number, because the mean of its divisors is an integer number (36539277).

Almost surely, 2^73078553 is an apocalyptic number.

It is an amenable number.

73078553 is a deficient number, since it is larger than the sum of its proper divisors (1).

73078553 is an equidigital number, since it uses as much as digits as its factorization.

73078553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 73078553 is about 8548.5994759376. The cubic root of 73078553 is about 418.0837744074.

The spelling of 73078553 in words is "seventy-three million, seventy-eight thousand, five hundred fifty-three".