1520500023 has 48 divisors (see below), whose sum is σ = 2658689280. Its totient is φ = 817972992.

The previous prime is 1520500021. The next prime is 1520500039. The reversal of 1520500023 is 3200050251.

It is a happy number.

It is not a de Polignac number, because 1520500023 - 2¹ = 1520500021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1520499969 and 1520500005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520500021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191215 + ... + 199007.

It is an arithmetic number, because the mean of its divisors is an integer number (55389360).

Almost surely, 2^1520500023 is an apocalyptic number.

1520500023 is a deficient number, since it is larger than the sum of its proper divisors (1138189257).

1520500023 is a wasteful number, since it uses less digits than its factorization.

1520500023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7988 (or 7985 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1520500023 is about 38993.5895116108. The cubic root of 1520500023 is about 1149.9054800702.

Adding to 1520500023 its reverse (3200050251), we get a palindrome (4720550274).

The spelling of 1520500023 in words is "one billion, five hundred twenty million, five hundred thousand, twenty-three".