1530545501 has 4 divisors (see below), whose sum is σ = 1559423772. Its totient is φ = 1501667232.

The previous prime is 1530545477. The next prime is 1530545503. The reversal of 1530545501 is 1055450351.

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 396607225 + 1133938276 = 19915^2 + 33674^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1530545501 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 (1530545503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14439056 + ... + 14439161.

It is an arithmetic number, because the mean of its divisors is an integer number (389855943).

Almost surely, 2^1530545501 is an apocalyptic number.

It is an amenable number.

1530545501 is a deficient number, since it is larger than the sum of its proper divisors (28878271).

1530545501 is an equidigital number, since it uses as much as digits as its factorization.

1530545501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28878270.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1530545501 is about 39122.1868126003. The cubic root of 1530545501 is about 1152.4322813952.

Adding to 1530545501 its reverse (1055450351), we get a palindrome (2585995852).

It can be divided in two parts, 15305 and 45501, that added together give a palindrome (60806).

The spelling of 1530545501 in words is "one billion, five hundred thirty million, five hundred forty-five thousand, five hundred one".