1545223513 has 8 divisors (see below), whose sum is σ = 1638841536. Its totient is φ = 1453808400.

The previous prime is 1545223451. The next prime is 1545223531. The reversal of 1545223513 is 3153225451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1545223513 is a prime.

It is a super-2 number, since 2×1545223513² = 4775431410256122338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1545223573) 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, 549283 + ... + 552088.

It is an arithmetic number, because the mean of its divisors is an integer number (204855192).

Almost surely, 2^1545223513 is an apocalyptic number.

It is an amenable number.

1545223513 is a deficient number, since it is larger than the sum of its proper divisors (93618023).

1545223513 is a wasteful number, since it uses less digits than its factorization.

1545223513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101455.

The product of its digits is 18000, while the sum is 31.

The square root of 1545223513 is about 39309.3311187051. The cubic root of 1545223513 is about 1156.1045293764.

Adding to 1545223513 its reverse (3153225451), we get a palindrome (4698448964).

The spelling of 1545223513 in words is "one billion, five hundred forty-five million, two hundred twenty-three thousand, five hundred thirteen".