538291597 has 2 divisors, whose sum is σ = 538291598. Its totient is φ = 538291596.

The previous prime is 538291549. The next prime is 538291627. The reversal of 538291597 is 795192835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421521961 + 116769636 = 20531^2 + 10806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538291597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 538291597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538291097) 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 as a sum of consecutive naturals, namely, 269145798 + 269145799.

It is an arithmetic number, because the mean of its divisors is an integer number (269145799).

Almost surely, 2^538291597 is an apocalyptic number.

It is an amenable number.

538291597 is a deficient number, since it is larger than the sum of its proper divisors (1).

538291597 is an equidigital number, since it uses as much as digits as its factorization.

538291597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 49.

The square root of 538291597 is about 23201.1119776618. Note that the first 3 decimals coincide. The cubic root of 538291597 is about 813.4656149434.

The spelling of 538291597 in words is "five hundred thirty-eight million, two hundred ninety-one thousand, five hundred ninety-seven".