1515352023 has 8 divisors (see below), whose sum is σ = 2244966000. Its totient is φ = 1010234664.

The previous prime is 1515352021. The next prime is 1515352037. The reversal of 1515352023 is 3202535151.

It is a happy number.

It is not a de Polignac number, because 1515352023 - 2¹ = 1515352021 is a prime.

It is a super-2 number, since 2×1515352023² = 4592583507220385058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 56124149 = 1515352023 / (1 + 5 + 1 + 5 + 3 + 5 + 2 + 0 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515352021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28062048 + ... + 28062101.

It is an arithmetic number, because the mean of its divisors is an integer number (280620750).

Almost surely, 2^1515352023 is an apocalyptic number.

1515352023 is a deficient number, since it is larger than the sum of its proper divisors (729613977).

1515352023 is an equidigital number, since it uses as much as digits as its factorization.

1515352023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56124158 (or 56124152 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1515352023 is about 38927.5226928198. The cubic root of 1515352023 is about 1148.6062568402.

Adding to 1515352023 its reverse (3202535151), we get a palindrome (4717887174).

It can be divided in two parts, 15153 and 52023, that added together give a palindrome (67176).

The spelling of 1515352023 in words is "one billion, five hundred fifteen million, three hundred fifty-two thousand, twenty-three".