51424613 has 2 divisors, whose sum is σ = 51424614. Its totient is φ = 51424612.

The previous prime is 51424591. The next prime is 51424651. The reversal of 51424613 is 31642415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30283009 + 21141604 = 5503^2 + 4598^2 .

It is a cyclic number.

It is not a de Polignac number, because 51424613 - 2⁸ = 51424357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51424673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25712306 + 25712307.

It is an arithmetic number, because the mean of its divisors is an integer number (25712307).

Almost surely, 2^51424613 is an apocalyptic number.

It is an amenable number.

51424613 is a deficient number, since it is larger than the sum of its proper divisors (1).

51424613 is an equidigital number, since it uses as much as digits as its factorization.

51424613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 51424613 is about 7171.0956624494. The cubic root of 51424613 is about 371.8693151969.

The spelling of 51424613 in words is "fifty-one million, four hundred twenty-four thousand, six hundred thirteen".