55405012651 has 4 divisors (see below), whose sum is σ = 55683430000. Its totient is φ = 55126595304.

The previous prime is 55405012627. The next prime is 55405012667. The reversal of 55405012651 is 15621050455.

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 55405012651 - 2¹⁷ = 55404881579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55405012451) 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, 139208376 + ... + 139208773.

It is an arithmetic number, because the mean of its divisors is an integer number (13920857500).

Almost surely, 2^55405012651 is an apocalyptic number.

55405012651 is a deficient number, since it is larger than the sum of its proper divisors (278417349).

55405012651 is a wasteful number, since it uses less digits than its factorization.

55405012651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278417348.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 55405012651 in words is "fifty-five billion, four hundred five million, twelve thousand, six hundred fifty-one".