51601007 has 2 divisors, whose sum is σ = 51601008. Its totient is φ = 51601006.

The previous prime is 51601003. The next prime is 51601009. The reversal of 51601007 is 70010615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51601007 - 2² = 51601003 is a prime.

Together with 51601009, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51601007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51601003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25800503 + 25800504.

It is an arithmetic number, because the mean of its divisors is an integer number (25800504).

Almost surely, 2^51601007 is an apocalyptic number.

51601007 is a deficient number, since it is larger than the sum of its proper divisors (1).

51601007 is an equidigital number, since it uses as much as digits as its factorization.

51601007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 51601007 is about 7183.3840910813. The cubic root of 51601007 is about 372.2940188164.

The spelling of 51601007 in words is "fifty-one million, six hundred one thousand, seven".