84573457 has 2 divisors, whose sum is σ = 84573458. Its totient is φ = 84573456.

The previous prime is 84573421. The next prime is 84573473. The reversal of 84573457 is 75437548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 4309776 = 8959^2 + 2076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84573457 is a prime.

It is not a weakly prime, because it can be changed into another prime (84573557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42286728 + 42286729.

It is an arithmetic number, because the mean of its divisors is an integer number (42286729).

Almost surely, 2^84573457 is an apocalyptic number.

It is an amenable number.

84573457 is a deficient number, since it is larger than the sum of its proper divisors (1).

84573457 is an equidigital number, since it uses as much as digits as its factorization.

84573457 is an evil number, because the sum of its binary digits is even.

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

The square root of 84573457 is about 9196.3828215228. The cubic root of 84573457 is about 438.9462680902.

The spelling of 84573457 in words is "eighty-four million, five hundred seventy-three thousand, four hundred fifty-seven".