55438001 has 4 divisors (see below), whose sum is σ = 55484772. Its totient is φ = 55391232.

The previous prime is 55437997. The next prime is 55438039. The reversal of 55438001 is 10083455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10083455 = 5 ⋅2016691.

It can be written as a sum of positive squares in 2 ways, for example, as 31192225 + 24245776 = 5585^2 + 4924^2 .

It is a cyclic number.

It is not a de Polignac number, because 55438001 - 2² = 55437997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55438501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21560 + ... + 23993.

It is an arithmetic number, because the mean of its divisors is an integer number (13871193).

Almost surely, 2^55438001 is an apocalyptic number.

It is an amenable number.

55438001 is a deficient number, since it is larger than the sum of its proper divisors (46771).

55438001 is a wasteful number, since it uses less digits than its factorization.

55438001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46770.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 55438001 is about 7445.6699497090. The cubic root of 55438001 is about 381.3020913863.

The spelling of 55438001 in words is "fifty-five million, four hundred thirty-eight thousand, one".