73078751 has 4 divisors (see below), whose sum is σ = 76256112. Its totient is φ = 69901392.

The previous prime is 73078739. The next prime is 73078763. The reversal of 73078751 is 15787037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15787037 = 7 ⋅2255291.

It is an interprime number because it is at equal distance from previous prime (73078739) and next prime (73078763).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73078751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73078711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588646 + ... + 1588691.

It is an arithmetic number, because the mean of its divisors is an integer number (19064028).

Almost surely, 2^73078751 is an apocalyptic number.

73078751 is a deficient number, since it is larger than the sum of its proper divisors (3177361).

73078751 is a wasteful number, since it uses less digits than its factorization.

73078751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177360.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 73078751 is about 8548.6110567741. The cubic root of 73078751 is about 418.0841519943.

The spelling of 73078751 in words is "seventy-three million, seventy-eight thousand, seven hundred fifty-one".