56446554451 has 6 divisors (see below), whose sum is σ = 65662318500. Its totient is φ = 48382760916.

The previous prime is 56446554449. The next prime is 56446554473. The reversal of 56446554451 is 15445564465.

It is not a de Polignac number, because 56446554451 - 2¹ = 56446554449 is a prime.

It is a super-2 number, since 2×56446554451² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1151970499 = 56446554451 / (5 + 6 + 4 + 4 + 6 + 5 + 5 + 4 + 4 + 5 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56446554395 and 56446554404.

It is not an unprimeable number, because it can be changed into a prime (56446554481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575985201 + ... + 575985298.

It is an arithmetic number, because the mean of its divisors is an integer number (10943719750).

Almost surely, 2^56446554451 is an apocalyptic number.

56446554451 is a deficient number, since it is larger than the sum of its proper divisors (9215764049).

56446554451 is a wasteful number, since it uses less digits than its factorization.

56446554451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151970513 (or 1151970506 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 49.

The spelling of 56446554451 in words is "fifty-six billion, four hundred forty-six million, five hundred fifty-four thousand, four hundred fifty-one".