2861951 has 16 divisors (see below), whose sum is σ = 3210240. Its totient is φ = 2540160.

The previous prime is 2861941. The next prime is 2861977. The reversal of 2861951 is 1591682.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2861951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25271 + ... + 25383.

It is an arithmetic number, because the mean of its divisors is an integer number (200640).

2^2861951 is an apocalyptic number.

2861951 is a deficient number, since it is larger than the sum of its proper divisors (348289).

2861951 is a wasteful number, since it uses less digits than its factorization.

2861951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206.

The product of its digits is 4320, while the sum is 32.

The square root of 2861951 is about 1691.7301794317. The cubic root of 2861951 is about 141.9778944628.

The spelling of 2861951 in words is "two million, eight hundred sixty-one thousand, nine hundred fifty-one".