1520534245 has 8 divisors (see below), whose sum is σ = 1824850584. Its totient is φ = 1216287744.

The previous prime is 1520534243. The next prime is 1520534269. The reversal of 1520534245 is 5424350251.

It can be written as a sum of positive squares in 4 ways, for example, as 460445764 + 1060088481 = 21458^2 + 32559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1520534245 - 2¹ = 1520534243 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 (1520534243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74157 + ... + 92413.

It is an arithmetic number, because the mean of its divisors is an integer number (228106323).

Almost surely, 2^1520534245 is an apocalyptic number.

It is an amenable number.

1520534245 is a deficient number, since it is larger than the sum of its proper divisors (304316339).

1520534245 is a wasteful number, since it uses less digits than its factorization.

1520534245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34919.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 1520534245 is about 38994.0283248602. The cubic root of 1520534245 is about 1149.9141070064.

Adding to 1520534245 its reverse (5424350251), we get a palindrome (6944884496).

The spelling of 1520534245 in words is "one billion, five hundred twenty million, five hundred thirty-four thousand, two hundred forty-five".