2357861 has 4 divisors (see below), whose sum is σ = 2572224. Its totient is φ = 2143500.

The previous prime is 2357851. The next prime is 2357863. The reversal of 2357861 is 1687532.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2357861 - 2¹⁴ = 2341477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2357863) 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 3 ways as a sum of consecutive naturals, for example, 107165 + ... + 107186.

It is an arithmetic number, because the mean of its divisors is an integer number (643056).

2^2357861 is an apocalyptic number.

It is an amenable number.

2357861 is a deficient number, since it is larger than the sum of its proper divisors (214363).

2357861 is a wasteful number, since it uses less digits than its factorization.

2357861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214362.

The product of its digits is 10080, while the sum is 32.

The square root of 2357861 is about 1535.5328065528. The cubic root of 2357861 is about 133.0983688197.

The spelling of 2357861 in words is "two million, three hundred fifty-seven thousand, eight hundred sixty-one".