55145601 has 12 divisors (see below), whose sum is σ = 91034112. Its totient is φ = 31511736.

The previous prime is 55145591. The next prime is 55145627. The reversal of 55145601 is 10654155.

It is a happy number.

55145601 is a `hidden beast` number, since 5 + 51 + 4 + 5 + 601 = 666.

It is not a de Polignac number, because 55145601 - 2⁶ = 55145537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55145681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437601 + ... + 437726.

It is an arithmetic number, because the mean of its divisors is an integer number (7586176).

Almost surely, 2^55145601 is an apocalyptic number.

It is an amenable number.

55145601 is a deficient number, since it is larger than the sum of its proper divisors (35888511).

55145601 is a wasteful number, since it uses less digits than its factorization.

55145601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875340 (or 875337 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 55145601 is about 7426.0084163701. The cubic root of 55145601 is about 380.6305344306.

Adding to 55145601 its reverse (10654155), we get a palindrome (65799756).

The spelling of 55145601 in words is "fifty-five million, one hundred forty-five thousand, six hundred one".