6121560551 has 4 divisors (see below), whose sum is σ = 6162645000. Its totient is φ = 6080476104.

The previous prime is 6121560541. The next prime is 6121560559. The reversal of 6121560551 is 1550651216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6121560551 - 2¹⁴ = 6121544167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6121560559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20542001 + ... + 20542298.

It is an arithmetic number, because the mean of its divisors is an integer number (1540661250).

Almost surely, 2^6121560551 is an apocalyptic number.

6121560551 is a deficient number, since it is larger than the sum of its proper divisors (41084449).

6121560551 is a wasteful number, since it uses less digits than its factorization.

6121560551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41084448.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 6121560551 is about 78240.4022931887. The cubic root of 6121560551 is about 1829.3103148221.

The spelling of 6121560551 in words is "six billion, one hundred twenty-one million, five hundred sixty thousand, five hundred fifty-one".