56451810291 has 8 divisors (see below), whose sum is σ = 79696673424. Its totient is φ = 35420743680.

The previous prime is 56451810281. The next prime is 56451810299. The reversal of 56451810291 is 19201815465.

56451810291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 56451810291 - 2¹¹ = 56451808243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56451810299) 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, 553449070 + ... + 553449171.

It is an arithmetic number, because the mean of its divisors is an integer number (9962084178).

Almost surely, 2^56451810291 is an apocalyptic number.

56451810291 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

56451810291 is a deficient number, since it is larger than the sum of its proper divisors (23244863133).

56451810291 is a wasteful number, since it uses less digits than its factorization.

56451810291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106898261.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 56451810291 in words is "fifty-six billion, four hundred fifty-one million, eight hundred ten thousand, two hundred ninety-one".