1045615521 has 32 divisors (see below), whose sum is σ = 1438145280. Its totient is φ = 675569664.

The previous prime is 1045615471. The next prime is 1045615531. The reversal of 1045615521 is 1255165401.

It is not a de Polignac number, because 1045615521 - 2⁷ = 1045615393 is a prime.

It is a super-2 number, since 2×1045615521² = 2186623635512202882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1045615531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5307595 + ... + 5307791.

It is an arithmetic number, because the mean of its divisors is an integer number (44942040).

Almost surely, 2^1045615521 is an apocalyptic number.

It is an amenable number.

1045615521 is a deficient number, since it is larger than the sum of its proper divisors (392529759).

1045615521 is a wasteful number, since it uses less digits than its factorization.

1045615521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1045615521 is about 32335.9787388599. The cubic root of 1045615521 is about 1014.9796629347.

The spelling of 1045615521 in words is "one billion, forty-five million, six hundred fifteen thousand, five hundred twenty-one".