55351306251 has 6 divisors (see below), whose sum is σ = 79951886820. Its totient is φ = 36900870828.

The previous prime is 55351306237. The next prime is 55351306267. The reversal of 55351306251 is 15260315355.

55351306251 is a `hidden beast` number, since 5 + 53 + 51 + 306 + 251 = 666.

It is not a de Polignac number, because 55351306251 - 2¹⁹ = 55350781963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55351306201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3075072561 + ... + 3075072578.

It is an arithmetic number, because the mean of its divisors is an integer number (13325314470).

Almost surely, 2^55351306251 is an apocalyptic number.

55351306251 is a deficient number, since it is larger than the sum of its proper divisors (24600580569).

55351306251 is a wasteful number, since it uses less digits than its factorization.

55351306251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150145145 (or 6150145142 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The spelling of 55351306251 in words is "fifty-five billion, three hundred fifty-one million, three hundred six thousand, two hundred fifty-one".