499781537 has 2 divisors, whose sum is σ = 499781538. Its totient is φ = 499781536.

The previous prime is 499781531. The next prime is 499781543. The reversal of 499781537 is 735187994.

It is a balanced prime because it is at equal distance from previous prime (499781531) and next prime (499781543).

It can be written as a sum of positive squares in only one way, i.e., 275261281 + 224520256 = 16591^2 + 14984^2 .

It is a cyclic number.

It is not a de Polignac number, because 499781537 - 2⁸ = 499781281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (499781531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249890768 + 249890769.

It is an arithmetic number, because the mean of its divisors is an integer number (249890769).

Almost surely, 2^499781537 is an apocalyptic number.

It is an amenable number.

499781537 is a deficient number, since it is larger than the sum of its proper divisors (1).

499781537 is an equidigital number, since it uses as much as digits as its factorization.

499781537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The square root of 499781537 is about 22355.7942601018. The cubic root of 499781537 is about 793.5849130124.

It can be divided in two parts, 49978 and 1537, that added together give a palindrome (51515).

The spelling of 499781537 in words is "four hundred ninety-nine million, seven hundred eighty-one thousand, five hundred thirty-seven".