55515071761 has 4 divisors (see below), whose sum is σ = 55516436800. Its totient is φ = 55513706724.

The previous prime is 55515071747. The next prime is 55515071881. The reversal of 55515071761 is 16717051555.

55515071761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55515071761 - 2¹¹ = 55515069713 is a prime.

It is a super-2 number, since 2×55515071761² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55515041761) 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, 619581 + ... + 703498.

It is an arithmetic number, because the mean of its divisors is an integer number (13879109200).

Almost surely, 2^55515071761 is an apocalyptic number.

It is an amenable number.

55515071761 is a deficient number, since it is larger than the sum of its proper divisors (1365039).

55515071761 is a wasteful number, since it uses less digits than its factorization.

55515071761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365038.

The product of its (nonzero) digits is 183750, while the sum is 43.

The spelling of 55515071761 in words is "fifty-five billion, five hundred fifteen million, seventy-one thousand, seven hundred sixty-one".