1530821255 has 16 divisors (see below), whose sum is σ = 1880648064. Its totient is φ = 1195676160.

The previous prime is 1530821191. The next prime is 1530821263. The reversal of 1530821255 is 5521280351.

It is not a de Polignac number, because 1530821255 - 2⁶ = 1530821191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91199 + ... + 106671.

It is an arithmetic number, because the mean of its divisors is an integer number (117540504).

Almost surely, 2^1530821255 is an apocalyptic number.

1530821255 is a deficient number, since it is larger than the sum of its proper divisors (349826809).

1530821255 is a wasteful number, since it uses less digits than its factorization.

1530821255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15946.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 1530821255 is about 39125.7109200587. The cubic root of 1530821255 is about 1152.5014873805.

It can be divided in two parts, 15308 and 21255, that added together give a palindrome (36563).

The spelling of 1530821255 in words is "one billion, five hundred thirty million, eight hundred twenty-one thousand, two hundred fifty-five".