84457537 has 2 divisors, whose sum is σ = 84457538. Its totient is φ = 84457536.

The previous prime is 84457523. The next prime is 84457579. The reversal of 84457537 is 73575448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74114881 + 10342656 = 8609^2 + 3216^2 .

It is a cyclic number.

It is not a de Polignac number, because 84457537 - 2⁷ = 84457409 is a prime.

It is a super-2 number, since 2×84457537² = 14266151112212738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84457493 and 84457502.

It is not a weakly prime, because it can be changed into another prime (84451537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42228768 + 42228769.

It is an arithmetic number, because the mean of its divisors is an integer number (42228769).

Almost surely, 2^84457537 is an apocalyptic number.

It is an amenable number.

84457537 is a deficient number, since it is larger than the sum of its proper divisors (1).

84457537 is an equidigital number, since it uses as much as digits as its factorization.

84457537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 43.

The square root of 84457537 is about 9190.0781824748. The cubic root of 84457537 is about 438.7456302138.

The spelling of 84457537 in words is "eighty-four million, four hundred fifty-seven thousand, five hundred thirty-seven".