545222501 has 4 divisors (see below), whose sum is σ = 555509772. Its totient is φ = 534935232.

The previous prime is 545222471. The next prime is 545222507. The reversal of 545222501 is 105222545.

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

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 393070276 + 152152225 = 19826^2 + 12335^2 .

It is a cyclic number.

It is not a de Polignac number, because 545222501 - 2¹⁴ = 545206117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545222507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5143556 + ... + 5143661.

It is an arithmetic number, because the mean of its divisors is an integer number (138877443).

Almost surely, 2^545222501 is an apocalyptic number.

It is an amenable number.

545222501 is a deficient number, since it is larger than the sum of its proper divisors (10287271).

545222501 is a wasteful number, since it uses less digits than its factorization.

545222501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10287270.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 545222501 is about 23350.0000214133. Note that the first 4 decimals coincide. The cubic root of 545222501 is about 816.9420613536.

The spelling of 545222501 in words is "five hundred forty-five million, two hundred twenty-two thousand, five hundred one".