51724601 has 2 divisors, whose sum is σ = 51724602. Its totient is φ = 51724600.

The previous prime is 51724577. The next prime is 51724609. The reversal of 51724601 is 10642715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44568976 + 7155625 = 6676^2 + 2675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51724601 is a prime.

It is not a weakly prime, because it can be changed into another prime (51724609) 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, 25862300 + 25862301.

It is an arithmetic number, because the mean of its divisors is an integer number (25862301).

Almost surely, 2^51724601 is an apocalyptic number.

It is an amenable number.

51724601 is a deficient number, since it is larger than the sum of its proper divisors (1).

51724601 is an equidigital number, since it uses as much as digits as its factorization.

51724601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51724601 is about 7191.9817157721. The cubic root of 51724601 is about 372.5910196027.

It can be divided in two parts, 51724 and 601, that added together give a palindrome (52325).

The spelling of 51724601 in words is "fifty-one million, seven hundred twenty-four thousand, six hundred one".