1530201551 has 4 divisors (see below), whose sum is σ = 1530279912. Its totient is φ = 1530123192.

The previous prime is 1530201511. The next prime is 1530201553. The reversal of 1530201551 is 1551020351.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1530201551 - 2²² = 1526007247 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 (1530201553) 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, 16280 + ... + 57666.

It is an arithmetic number, because the mean of its divisors is an integer number (382569978).

Almost surely, 2^1530201551 is an apocalyptic number.

1530201551 is a deficient number, since it is larger than the sum of its proper divisors (78361).

1530201551 is an equidigital number, since it uses as much as digits as its factorization.

1530201551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78360.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1530201551 is about 39117.7907223810. The cubic root of 1530201551 is about 1152.3459486076.

The spelling of 1530201551 in words is "one billion, five hundred thirty million, two hundred one thousand, five hundred fifty-one".