6161500521 has 48 divisors (see below), whose sum is σ = 10410025920. Its totient is φ = 3571793280.

The previous prime is 6161500507. The next prime is 6161500547. The reversal of 6161500521 is 1250051616.

It is a happy number.

It is not a de Polignac number, because 6161500521 - 2²⁶ = 6094391657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6161504521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137505 + ... + 176721.

It is an arithmetic number, because the mean of its divisors is an integer number (216875540).

Almost surely, 2^6161500521 is an apocalyptic number.

It is an amenable number.

6161500521 is a deficient number, since it is larger than the sum of its proper divisors (4248525399).

6161500521 is a wasteful number, since it uses less digits than its factorization.

6161500521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39283 (or 39254 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 6161500521 is about 78495.2261032478. The cubic root of 6161500521 is about 1833.2801235870.

The spelling of 6161500521 in words is "six billion, one hundred sixty-one million, five hundred thousand, five hundred twenty-one".