51008073 has 4 divisors (see below), whose sum is σ = 68010768. Its totient is φ = 34005380.

The previous prime is 51008047. The next prime is 51008107. The reversal of 51008073 is 37080015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51008073 - 2¹⁶ = 50942537 is a prime.

It is a super-2 number, since 2×51008073² = 5203647022346658, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51008003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8501343 + ... + 8501348.

It is an arithmetic number, because the mean of its divisors is an integer number (17002692).

Almost surely, 2^51008073 is an apocalyptic number.

It is an amenable number.

51008073 is a deficient number, since it is larger than the sum of its proper divisors (17002695).

51008073 is a wasteful number, since it uses less digits than its factorization.

51008073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17002694.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 51008073 is about 7141.9936292327. The cubic root of 51008073 is about 370.8625433148.

Adding to 51008073 its reverse (37080015), we get a palindrome (88088088).

The spelling of 51008073 in words is "fifty-one million, eight thousand, seventy-three".