51401267 has 2 divisors, whose sum is σ = 51401268. Its totient is φ = 51401266.

The previous prime is 51401243. The next prime is 51401269. The reversal of 51401267 is 76210415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51401267 is a prime.

Together with 51401269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51401269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25700633 + 25700634.

It is an arithmetic number, because the mean of its divisors is an integer number (25700634).

Almost surely, 2^51401267 is an apocalyptic number.

51401267 is a deficient number, since it is larger than the sum of its proper divisors (1).

51401267 is an equidigital number, since it uses as much as digits as its factorization.

51401267 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 26.

The square root of 51401267 is about 7169.4676929323. The cubic root of 51401267 is about 371.8130323222.

The spelling of 51401267 in words is "fifty-one million, four hundred one thousand, two hundred sixty-seven".