2851951 has 2 divisors, whose sum is σ = 2851952. Its totient is φ = 2851950.

The previous prime is 2851949. The next prime is 2851973. The reversal of 2851951 is 1591582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2851951 - 2¹ = 2851949 is a prime.

Together with 2851949, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2851921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425975 + 1425976.

It is an arithmetic number, because the mean of its divisors is an integer number (1425976).

2^2851951 is an apocalyptic number.

2851951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851951 is an equidigital number, since it uses as much as digits as its factorization.

2851951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 31.

The square root of 2851951 is about 1688.7720390864. The cubic root of 2851951 is about 141.8123388927.

The spelling of 2851951 in words is "two million, eight hundred fifty-one thousand, nine hundred fifty-one".