2151827 has 2 divisors, whose sum is σ = 2151828. Its totient is φ = 2151826.

The previous prime is 2151817. The next prime is 2151847. The reversal of 2151827 is 7281512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2151827 - 2¹² = 2147731 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2151796 and 2151805.

It is not a weakly prime, because it can be changed into another prime (2151817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075913 + 1075914.

It is an arithmetic number, because the mean of its divisors is an integer number (1075914).

2^2151827 is an apocalyptic number.

2151827 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151827 is an equidigital number, since it uses as much as digits as its factorization.

2151827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 26.

The square root of 2151827 is about 1466.9106993952. The cubic root of 2151827 is about 129.1028364933.

The spelling of 2151827 in words is "two million, one hundred fifty-one thousand, eight hundred twenty-seven".