2356493 has 4 divisors (see below), whose sum is σ = 2420220. Its totient is φ = 2292768.

The previous prime is 2356469. The next prime is 2356531. The reversal of 2356493 is 3946532.

Added to its reverse (3946532) it gives a triangular number (6303025 = T₃₅₅₀).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1737124 + 619369 = 1318^2 + 787^2 .

It is a cyclic number.

It is not a de Polignac number, because 2356493 - 2⁶ = 2356429 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 (2356423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31808 + ... + 31881.

It is an arithmetic number, because the mean of its divisors is an integer number (605055).

2^2356493 is an apocalyptic number.

It is an amenable number.

2356493 is a deficient number, since it is larger than the sum of its proper divisors (63727).

2356493 is an equidigital number, since it uses as much as digits as its factorization.

2356493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63726.

The product of its digits is 19440, while the sum is 32.

The square root of 2356493 is about 1535.0872939348. The cubic root of 2356493 is about 133.0726231978.

Adding to 2356493 its reverse (3946532), we get a triangular number (6303025 = T₃₅₅₀).

The spelling of 2356493 in words is "two million, three hundred fifty-six thousand, four hundred ninety-three".