999457573 has 2 divisors, whose sum is σ = 999457574. Its totient is φ = 999457572.

The previous prime is 999457549. The next prime is 999457583. The reversal of 999457573 is 375754999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738861124 + 260596449 = 27182^2 + 16143^2 .

It is a cyclic number.

It is not a de Polignac number, because 999457573 - 2²¹ = 997360421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999457583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499728786 + 499728787.

It is an arithmetic number, because the mean of its divisors is an integer number (499728787).

Almost surely, 2^999457573 is an apocalyptic number.

It is an amenable number.

999457573 is a deficient number, since it is larger than the sum of its proper divisors (1).

999457573 is an equidigital number, since it uses as much as digits as its factorization.

999457573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10716300, while the sum is 58.

The square root of 999457573 is about 31614.1989144119. The cubic root of 999457573 is about 999.8191582983.

The spelling of 999457573 in words is "nine hundred ninety-nine million, four hundred fifty-seven thousand, five hundred seventy-three".