537998231 has 2 divisors, whose sum is σ = 537998232. Its totient is φ = 537998230.

The previous prime is 537998203. The next prime is 537998261. The reversal of 537998231 is 132899735.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-537998231 is a prime.

It is a super-2 number, since 2×537998231² = 578884193118258722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (537998261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268999115 + 268999116.

It is an arithmetic number, because the mean of its divisors is an integer number (268999116).

Almost surely, 2^537998231 is an apocalyptic number.

537998231 is a deficient number, since it is larger than the sum of its proper divisors (1).

537998231 is an equidigital number, since it uses as much as digits as its factorization.

537998231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 537998231 is about 23194.7888759523. The cubic root of 537998231 is about 813.3178099735.

The spelling of 537998231 in words is "five hundred thirty-seven million, nine hundred ninety-eight thousand, two hundred thirty-one".