1573139 has 2 divisors, whose sum is σ = 1573140. Its totient is φ = 1573138.

The previous prime is 1573133. The next prime is 1573141. The reversal of 1573139 is 9313751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1573139 - 2¹⁶ = 1507603 is a prime.

It is a Sophie Germain prime.

Together with 1573141, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1573133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786569 + 786570.

It is an arithmetic number, because the mean of its divisors is an integer number (786570).

2^1573139 is an apocalyptic number.

1573139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1573139 is an equidigital number, since it uses as much as digits as its factorization.

1573139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2835, while the sum is 29.

The square root of 1573139 is about 1254.2483805052. The cubic root of 1573139 is about 116.3024952720.

The spelling of 1573139 in words is "one million, five hundred seventy-three thousand, one hundred thirty-nine".