51822413 has 2 divisors, whose sum is σ = 51822414. Its totient is φ = 51822412.

The previous prime is 51822377. The next prime is 51822431. The reversal of 51822413 is 31422815.

Together with next prime (51822431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50651689 + 1170724 = 7117^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 51822413 - 2²⁰ = 50773837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51122413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25911206 + 25911207.

It is an arithmetic number, because the mean of its divisors is an integer number (25911207).

Almost surely, 2^51822413 is an apocalyptic number.

It is an amenable number.

51822413 is a deficient number, since it is larger than the sum of its proper divisors (1).

51822413 is an equidigital number, since it uses as much as digits as its factorization.

51822413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 26.

The square root of 51822413 is about 7198.7785769532. The cubic root of 51822413 is about 372.8257301288.

The spelling of 51822413 in words is "fifty-one million, eight hundred twenty-two thousand, four hundred thirteen".