2861901 has 12 divisors (see below), whose sum is σ = 4724512. Its totient is φ = 1635336.

The previous prime is 2861897. The next prime is 2861909. The reversal of 2861901 is 1091682.

It is not a de Polignac number, because 2861901 - 2² = 2861897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22651 + ... + 22776.

2^2861901 is an apocalyptic number.

2861901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2861901 is a deficient number, since it is larger than the sum of its proper divisors (1862611).

2861901 is a wasteful number, since it uses less digits than its factorization.

2861901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45440 (or 45437 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2861901 is about 1691.7154015969. The cubic root of 2861901 is about 141.9770676450.

It can be divided in two parts, 286 and 1901, that added together give a 7-th power (2187 = 3⁷).

The spelling of 2861901 in words is "two million, eight hundred sixty-one thousand, nine hundred one".