73740551 has 2 divisors, whose sum is σ = 73740552. Its totient is φ = 73740550.

The previous prime is 73740517. The next prime is 73740607. The reversal of 73740551 is 15504737.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73740551 - 2⁶ = 73740487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73740151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36870275 + 36870276.

It is an arithmetic number, because the mean of its divisors is an integer number (36870276).

Almost surely, 2^73740551 is an apocalyptic number.

73740551 is a deficient number, since it is larger than the sum of its proper divisors (1).

73740551 is an equidigital number, since it uses as much as digits as its factorization.

73740551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 73740551 is about 8587.2318589869. The cubic root of 73740551 is about 419.3424157954.

The spelling of 73740551 in words is "seventy-three million, seven hundred forty thousand, five hundred fifty-one".