15485561 has 16 divisors (see below), whose sum is σ = 19152000. Its totient is φ = 12192768.

The previous prime is 15485557. The next prime is 15485567. The reversal of 15485561 is 16558451.

It is a happy number.

It is not a de Polignac number, because 15485561 - 2² = 15485557 is a prime.

It is a super-3 number, since 3×15485561³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (15485567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34265 + ... + 34713.

It is an arithmetic number, because the mean of its divisors is an integer number (1197000).

Almost surely, 2^15485561 is an apocalyptic number.

It is an amenable number.

15485561 is a deficient number, since it is larger than the sum of its proper divisors (3666439).

15485561 is a wasteful number, since it uses less digits than its factorization.

15485561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its digits is 24000, while the sum is 35.

The square root of 15485561 is about 3935.1697549153. The cubic root of 15485561 is about 249.2541020919.

The spelling of 15485561 in words is "fifteen million, four hundred eighty-five thousand, five hundred sixty-one".