55451897 has 8 divisors (see below), whose sum is σ = 57266880. Its totient is φ = 53660880.

The previous prime is 55451843. The next prime is 55451911. The reversal of 55451897 is 79815455.

55451897 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55451897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55451797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229 + ... + 10602.

It is an arithmetic number, because the mean of its divisors is an integer number (7158360).

Almost surely, 2^55451897 is an apocalyptic number.

It is an amenable number.

55451897 is a deficient number, since it is larger than the sum of its proper divisors (1814983).

55451897 is a wasteful number, since it uses less digits than its factorization.

55451897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11983.

The product of its digits is 252000, while the sum is 44.

The square root of 55451897 is about 7446.6030510562. The cubic root of 55451897 is about 381.3339475807. Note that the first 3 decimals are identical.

The spelling of 55451897 in words is "fifty-five million, four hundred fifty-one thousand, eight hundred ninety-seven".