55613001 has 16 divisors (see below), whose sum is σ = 78836544. Its totient is φ = 34750464.

The previous prime is 55612939. The next prime is 55613003. The reversal of 55613001 is 10031655.

It is a happy number.

It is not a de Polignac number, because 55613001 - 2⁶ = 55612937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55613003) 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 15 ways as a sum of consecutive naturals, for example, 10986 + ... + 15228.

It is an arithmetic number, because the mean of its divisors is an integer number (4927284).

Almost surely, 2^55613001 is an apocalyptic number.

55613001 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

55613001 is a deficient number, since it is larger than the sum of its proper divisors (23223543).

55613001 is a wasteful number, since it uses less digits than its factorization.

55613001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4520.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 55613001 is about 7457.4124869153. The cubic root of 55613001 is about 381.7028861169.

Adding to 55613001 its reverse (10031655), we get a palindrome (65644656).

The spelling of 55613001 in words is "fifty-five million, six hundred thirteen thousand, one".