51554453355 has 24 divisors (see below), whose sum is σ = 91047114288. Its totient is φ = 26976920256.

The previous prime is 51554453341. The next prime is 51554453383. The reversal of 51554453355 is 55335445515.

51554453355 is a `hidden beast` number, since 5 + 1 + 5 + 544 + 53 + 3 + 55 = 666.

It is not a de Polignac number, because 51554453355 - 2⁸ = 51554453099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 51554453355.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10805677 + ... + 10810446.

It is an arithmetic number, because the mean of its divisors is an integer number (3793629762).

Almost surely, 2^51554453355 is an apocalyptic number.

51554453355 is a deficient number, since it is larger than the sum of its proper divisors (39492660933).

51554453355 is a wasteful number, since it uses less digits than its factorization.

51554453355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21616187 (or 21616184 counting only the distinct ones).

The product of its digits is 2250000, while the sum is 45.

The spelling of 51554453355 in words is "fifty-one billion, five hundred fifty-four million, four hundred fifty-three thousand, three hundred fifty-five".