1521000023 has 2 divisors, whose sum is σ = 1521000024. Its totient is φ = 1521000022.

The previous prime is 1521000017. The next prime is 1521000029. The reversal of 1521000023 is 3200001251.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1521000017) and next prime (1521000029).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1521000023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1520999971 and 1521000007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521000029) 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 as a sum of consecutive naturals, namely, 760500011 + 760500012.

It is an arithmetic number, because the mean of its divisors is an integer number (760500012).

Almost surely, 2^1521000023 is an apocalyptic number.

1521000023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521000023 is an equidigital number, since it uses as much as digits as its factorization.

1521000023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1521000023 is about 39000.0002948718. Note that the first 3 decimals coincide. The cubic root of 1521000023 is about 1150.0315109198.

Adding to 1521000023 its reverse (3200001251), we get a palindrome (4721001274).

The spelling of 1521000023 in words is "one billion, five hundred twenty-one million, twenty-three", and thus it is an aban number.