1513523445 has 16 divisors (see below), whose sum is σ = 2767585920. Its totient is φ = 691896384.

The previous prime is 1513523423. The next prime is 1513523471. The reversal of 1513523445 is 5443253151.

It is not a de Polignac number, because 1513523445 - 2¹² = 1513519349 is a prime.

It is a congruent number.

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, 7207150 + ... + 7207359.

It is an arithmetic number, because the mean of its divisors is an integer number (172974120).

Almost surely, 2^1513523445 is an apocalyptic number.

1513523445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1513523445 is a deficient number, since it is larger than the sum of its proper divisors (1254062475).

1513523445 is a wasteful number, since it uses less digits than its factorization.

1513523445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14414524.

The product of its digits is 36000, while the sum is 33.

The square root of 1513523445 is about 38904.0286474293. The cubic root of 1513523445 is about 1148.1440624710.

Adding to 1513523445 its reverse (5443253151), we get a palindrome (6956776596).

The spelling of 1513523445 in words is "one billion, five hundred thirteen million, five hundred twenty-three thousand, four hundred forty-five".