427951 has 2 divisors, whose sum is σ = 427952. Its totient is φ = 427950.

The previous prime is 427949. The next prime is 427957. The reversal of 427951 is 159724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427951 - 2¹ = 427949 is a prime.

Together with 427949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213975 + 213976.

It is an arithmetic number, because the mean of its divisors is an integer number (213976).

2⁴²⁷⁹⁵¹ is an apocalyptic number.

427951 is a deficient number, since it is larger than the sum of its proper divisors (1).

427951 is an equidigital number, since it uses as much as digits as its factorization.

427951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 427951 is about 654.1796389372. The cubic root of 427951 is about 75.3583443897.

It can be divided in two parts, 427 and 951, that added together give a triangular number (1378 = T₅₂).

The spelling of 427951 in words is "four hundred twenty-seven thousand, nine hundred fifty-one".