51147403 has 2 divisors, whose sum is σ = 51147404. Its totient is φ = 51147402.

The previous prime is 51147401. The next prime is 51147457. The reversal of 51147403 is 30474115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51147403 - 2¹ = 51147401 is a prime.

Together with 51147401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51147401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25573701 + 25573702.

It is an arithmetic number, because the mean of its divisors is an integer number (25573702).

Almost surely, 2^51147403 is an apocalyptic number.

51147403 is a deficient number, since it is larger than the sum of its proper divisors (1).

51147403 is an equidigital number, since it uses as much as digits as its factorization.

51147403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 51147403 is about 7151.7412565053. The cubic root of 51147403 is about 371.1999101818.

The spelling of 51147403 in words is "fifty-one million, one hundred forty-seven thousand, four hundred three".