542537 has 2 divisors, whose sum is σ = 542538. Its totient is φ = 542536.

The previous prime is 542533. The next prime is 542539. The reversal of 542537 is 735245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541696 + 841 = 736^2 + 29^2 .

It is a cyclic number.

It is not a de Polignac number, because 542537 - 2² = 542533 is a prime.

Together with 542539, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₄₄₇₆₅ and since 542537 and 44765 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (542533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271268 + 271269.

It is an arithmetic number, because the mean of its divisors is an integer number (271269).

2⁵⁴²⁵³⁷ is an apocalyptic number.

It is an amenable number.

542537 is a deficient number, since it is larger than the sum of its proper divisors (1).

542537 is an equidigital number, since it uses as much as digits as its factorization.

542537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 26.

The square root of 542537 is about 736.5711099412. The cubic root of 542537 is about 81.5598566643.

The spelling of 542537 in words is "five hundred forty-two thousand, five hundred thirty-seven".