545222499 has 32 divisors (see below), whose sum is σ = 787987200. Its totient is φ = 334212480.

The previous prime is 545222471. The next prime is 545222507. The reversal of 545222499 is 994222545.

It is a Cunningham number, because it is equal to 23350²-1.

It is not a de Polignac number, because 545222499 - 2¹² = 545218403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545222499.

It is not an unprimeable number, because it can be changed into a prime (545222299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443017 + ... + 444245.

It is an arithmetic number, because the mean of its divisors is an integer number (24624600).

Almost surely, 2^545222499 is an apocalyptic number.

545222499 is a deficient number, since it is larger than the sum of its proper divisors (242764701).

545222499 is a wasteful number, since it uses less digits than its factorization.

545222499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its digits is 259200, while the sum is 42.

The square root of 545222499 is about 23349.9999785867. Note that the first 4 decimals coincide. The cubic root of 545222499 is about 816.9420603546.

The spelling of 545222499 in words is "five hundred forty-five million, two hundred twenty-two thousand, four hundred ninety-nine".