1145520598 has 4 divisors (see below), whose sum is σ = 1718280900. Its totient is φ = 572760298.

The previous prime is 1145520581. The next prime is 1145520601. The reversal of 1145520598 is 8950255411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8950255411 = 16063 ⋅557197.

It is a self number, because there is not a number n which added to its sum of digits gives 1145520598.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286380148 + ... + 286380151.

It is an arithmetic number, because the mean of its divisors is an integer number (429570225).

Almost surely, 2^1145520598 is an apocalyptic number.

1145520598 is a deficient number, since it is larger than the sum of its proper divisors (572760302).

1145520598 is an equidigital number, since it uses as much as digits as its factorization.

1145520598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572760301.

The product of its (nonzero) digits is 72000, while the sum is 40.

The square root of 1145520598 is about 33845.5402970613. The cubic root of 1145520598 is about 1046.3274867327.

The spelling of 1145520598 in words is "one billion, one hundred forty-five million, five hundred twenty thousand, five hundred ninety-eight".