526997451997 has 2 divisors, whose sum is σ = 526997451998. Its totient is φ = 526997451996.

The previous prime is 526997451991. The next prime is 526997452013. The reversal of 526997451997 is 799154799625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403960665241 + 123036786756 = 635579^2 + 350766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-526997451997 is a prime.

It is a super-2 number, since 2×526997451997² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526997451991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263498725998 + 263498725999.

It is an arithmetic number, because the mean of its divisors is an integer number (263498725999).

Almost surely, 2^526997451997 is an apocalyptic number.

It is an amenable number.

526997451997 is a deficient number, since it is larger than the sum of its proper divisors (1).

526997451997 is an equidigital number, since it uses as much as digits as its factorization.

526997451997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 385786800, while the sum is 73.

The spelling of 526997451997 in words is "five hundred twenty-six billion, nine hundred ninety-seven million, four hundred fifty-one thousand, nine hundred ninety-seven".