55412728251 has 8 divisors (see below), whose sum is σ = 73886851584. Its totient is φ = 36940211880.

The previous prime is 55412728249. The next prime is 55412728271. The reversal of 55412728251 is 15282721455.

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

It is not a de Polignac number, because 55412728251 - 2¹ = 55412728249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55412728271) 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, 318835 + ... + 460956.

It is an arithmetic number, because the mean of its divisors is an integer number (9235856448).

Almost surely, 2^55412728251 is an apocalyptic number.

55412728251 is a deficient number, since it is larger than the sum of its proper divisors (18474123333).

55412728251 is a wasteful number, since it uses less digits than its factorization.

55412728251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803481.

The product of its digits is 224000, while the sum is 42.

The spelling of 55412728251 in words is "fifty-five billion, four hundred twelve million, seven hundred twenty-eight thousand, two hundred fifty-one".