55551550427 has 8 divisors (see below), whose sum is σ = 55613952000. Its totient is φ = 55489185640.

The previous prime is 55551550399. The next prime is 55551550429. The reversal of 55551550427 is 72405515555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55551550427 - 2¹² = 55551546331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55551550429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3876758 + ... + 3891060.

It is an arithmetic number, because the mean of its divisors is an integer number (6951744000).

Almost surely, 2^55551550427 is an apocalyptic number.

55551550427 is a deficient number, since it is larger than the sum of its proper divisors (62401573).

55551550427 is a wasteful number, since it uses less digits than its factorization.

55551550427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18393.

The product of its (nonzero) digits is 875000, while the sum is 44.

The spelling of 55551550427 in words is "fifty-five billion, five hundred fifty-one million, five hundred fifty thousand, four hundred twenty-seven".