51066403 has 2 divisors, whose sum is σ = 51066404. Its totient is φ = 51066402.

The previous prime is 51066397. The next prime is 51066409. The reversal of 51066403 is 30466015.

It is a balanced prime because it is at equal distance from previous prime (51066397) and next prime (51066409).

It is a cyclic number.

It is not a de Polignac number, because 51066403 - 2⁹ = 51065891 is a prime.

It is not a weakly prime, because it can be changed into another prime (51066409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25533201 + 25533202.

It is an arithmetic number, because the mean of its divisors is an integer number (25533202).

Almost surely, 2^51066403 is an apocalyptic number.

51066403 is a deficient number, since it is larger than the sum of its proper divisors (1).

51066403 is an equidigital number, since it uses as much as digits as its factorization.

51066403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 51066403 is about 7146.0760561304. The cubic root of 51066403 is about 371.0038554003.

The spelling of 51066403 in words is "fifty-one million, sixty-six thousand, four hundred three".