2506783 has 2 divisors, whose sum is σ = 2506784. Its totient is φ = 2506782.

The previous prime is 2506759. The next prime is 2506799. The reversal of 2506783 is 3876052.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2506783 is a prime.

It is a super-2 number, since 2×2506783² = 12567922018178, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 5⁵ + 0 + 6⁷ + 7⁶ + 8⁷ + 3⁶ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2506723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253391 + 1253392.

It is an arithmetic number, because the mean of its divisors is an integer number (1253392).

2^2506783 is an apocalyptic number.

2506783 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506783 is an equidigital number, since it uses as much as digits as its factorization.

2506783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2506783 is about 1583.2823500564. The cubic root of 2506783 is about 135.8435159499.

The spelling of 2506783 in words is "two million, five hundred six thousand, seven hundred eighty-three".