1520530345 has 16 divisors (see below), whose sum is σ = 1907856000. Its totient is φ = 1161160704.

The previous prime is 1520530339. The next prime is 1520530351. The reversal of 1520530345 is 5430350251.

It is an interprime number because it is at equal distance from previous prime (1520530339) and next prime (1520530351).

It is not a de Polignac number, because 1520530345 - 2¹⁵ = 1520497577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44137 + ... + 70633.

It is an arithmetic number, because the mean of its divisors is an integer number (119241000).

Almost surely, 2^1520530345 is an apocalyptic number.

It is an amenable number.

1520530345 is a deficient number, since it is larger than the sum of its proper divisors (387325655).

1520530345 is a wasteful number, since it uses less digits than its factorization.

1520530345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27024.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1520530345 is about 38993.9783171710. The cubic root of 1520530345 is about 1149.9131238719.

Adding to 1520530345 its reverse (5430350251), we get a palindrome (6950880596).

It can be divided in two parts, 1520530 and 345, that added together give a cube (1520875 = 115³).

The spelling of 1520530345 in words is "one billion, five hundred twenty million, five hundred thirty thousand, three hundred forty-five".