51455164451 has 16 divisors (see below), whose sum is σ = 53886446208. Its totient is φ = 49082073600.

The previous prime is 51455164441. The next prime is 51455164459. The reversal of 51455164451 is 15446155415.

It is a cyclic number.

It is not a de Polignac number, because 51455164451 - 2¹⁰ = 51455163427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51455164399 and 51455164408.

It is not an unprimeable number, because it can be changed into a prime (51455164459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1954391 + ... + 1980543.

It is an arithmetic number, because the mean of its divisors is an integer number (3367902888).

Almost surely, 2^51455164451 is an apocalyptic number.

51455164451 is a deficient number, since it is larger than the sum of its proper divisors (2431281757).

51455164451 is a wasteful number, since it uses less digits than its factorization.

51455164451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27262.

The product of its digits is 240000, while the sum is 41.

The spelling of 51455164451 in words is "fifty-one billion, four hundred fifty-five million, one hundred sixty-four thousand, four hundred fifty-one".