2563139 has 2 divisors, whose sum is σ = 2563140. Its totient is φ = 2563138.

The previous prime is 2563117. The next prime is 2563147. The reversal of 2563139 is 9313652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2563139 - 2¹² = 2559043 is a prime.

It is not a weakly prime, because it can be changed into another prime (2563109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281569 + 1281570.

It is an arithmetic number, because the mean of its divisors is an integer number (1281570).

2^2563139 is an apocalyptic number.

2563139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563139 is an equidigital number, since it uses as much as digits as its factorization.

2563139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 29.

The square root of 2563139 is about 1600.9806369847. The cubic root of 2563139 is about 136.8539655479.

The spelling of 2563139 in words is "two million, five hundred sixty-three thousand, one hundred thirty-nine".