1530045551 has 4 divisors (see below), whose sum is σ = 1534040832. Its totient is φ = 1526050272.

The previous prime is 1530045523. The next prime is 1530045557. The reversal of 1530045551 is 1555400351.

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

It is a cyclic number.

It is not a de Polignac number, because 1530045551 - 2¹⁸ = 1529783407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530045557) 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, 1997066 + ... + 1997831.

It is an arithmetic number, because the mean of its divisors is an integer number (383510208).

Almost surely, 2^1530045551 is an apocalyptic number.

1530045551 is a deficient number, since it is larger than the sum of its proper divisors (3995281).

1530045551 is an equidigital number, since it uses as much as digits as its factorization.

1530045551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995280.

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

The square root of 1530045551 is about 39115.7966939189. The cubic root of 1530045551 is about 1152.3067877365.

The spelling of 1530045551 in words is "one billion, five hundred thirty million, forty-five thousand, five hundred fifty-one".