51313007 has 4 divisors (see below), whose sum is σ = 51931320. Its totient is φ = 50694696.

The previous prime is 51313001. The next prime is 51313013. The reversal of 51313007 is 70031315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70031315 = 5 ⋅14006263.

It is an interprime number because it is at equal distance from previous prime (51313001) and next prime (51313013).

It is a cyclic number.

It is not a de Polignac number, because 51313007 - 2¹⁰ = 51311983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51313007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313001) 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, 309032 + ... + 309197.

It is an arithmetic number, because the mean of its divisors is an integer number (12982830).

Almost surely, 2^51313007 is an apocalyptic number.

51313007 is a deficient number, since it is larger than the sum of its proper divisors (618313).

51313007 is an equidigital number, since it uses as much as digits as its factorization.

51313007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618312.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 51313007 is about 7163.3097797038. The cubic root of 51313007 is about 371.6000997055.

The spelling of 51313007 in words is "fifty-one million, three hundred thirteen thousand, seven".