1515020045 has 16 divisors (see below), whose sum is σ = 2266627968. Its totient is φ = 944427840.

The previous prime is 1515020009. The next prime is 1515020047. The reversal of 1515020045 is 5400205151.

It is a happy number.

It is not a de Polignac number, because 1515020045 - 2⁶ = 1515019981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1515020045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515020047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967174 + ... + 1967943.

It is an arithmetic number, because the mean of its divisors is an integer number (141664248).

Almost surely, 2^1515020045 is an apocalyptic number.

It is an amenable number.

1515020045 is a deficient number, since it is larger than the sum of its proper divisors (751607923).

1515020045 is a wasteful number, since it uses less digits than its factorization.

1515020045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935140.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1515020045 is about 38923.2584067675. The cubic root of 1515020045 is about 1148.5223731724.

Adding to 1515020045 its reverse (5400205151), we get a palindrome (6915225196).

The spelling of 1515020045 in words is "one billion, five hundred fifteen million, twenty thousand, forty-five".