55146897 has 24 divisors (see below), whose sum is σ = 86322600. Its totient is φ = 33924384.

The previous prime is 55146863. The next prime is 55146913. The reversal of 55146897 is 79864155.

55146897 is a `hidden beast` number, since 551 + 4 + 6 + 8 + 97 = 666.

55146897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13660416 + 41486481 = 3696^2 + 6441^2 .

It is not a de Polignac number, because 55146897 - 2¹⁴ = 55130513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55186897) 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 23 ways as a sum of consecutive naturals, for example, 18379 + ... + 21167.

It is an arithmetic number, because the mean of its divisors is an integer number (3596775).

Almost surely, 2^55146897 is an apocalyptic number.

It is an amenable number.

55146897 is a deficient number, since it is larger than the sum of its proper divisors (31175703).

55146897 is a wasteful number, since it uses less digits than its factorization.

55146897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834 (or 2805 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 55146897 is about 7426.0956767335. The cubic root of 55146897 is about 380.6335161934.

The spelling of 55146897 in words is "fifty-five million, one hundred forty-six thousand, eight hundred ninety-seven".