54121512761 has 4 divisors (see below), whose sum is σ = 54122822400. Its totient is φ = 54120203124.

The previous prime is 54121512737. The next prime is 54121512853. The reversal of 54121512761 is 16721512145.

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 a de Polignac number, because none of the positive numbers 2^k-54121512761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54121517761) 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, 590741 + ... + 676178.

It is an arithmetic number, because the mean of its divisors is an integer number (13530705600).

Almost surely, 2^54121512761 is an apocalyptic number.

It is an amenable number.

54121512761 is a deficient number, since it is larger than the sum of its proper divisors (1309639).

54121512761 is a wasteful number, since it uses less digits than its factorization.

54121512761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309638.

The product of its digits is 16800, while the sum is 35.

The spelling of 54121512761 in words is "fifty-four billion, one hundred twenty-one million, five hundred twelve thousand, seven hundred sixty-one".