55274813 has 8 divisors (see below), whose sum is σ = 61438176. Its totient is φ = 49301200.

The previous prime is 55274801. The next prime is 55274831. The reversal of 55274813 is 31847255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55274813 - 2⁶ = 55274749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55274873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46823 + ... + 47988.

It is an arithmetic number, because the mean of its divisors is an integer number (7679772).

Almost surely, 2^55274813 is an apocalyptic number.

55274813 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55274813 is a deficient number, since it is larger than the sum of its proper divisors (6163363).

55274813 is a wasteful number, since it uses less digits than its factorization.

55274813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94875.

The product of its digits is 33600, while the sum is 35.

The square root of 55274813 is about 7434.7032893048. The cubic root of 55274813 is about 380.9275884642.

The spelling of 55274813 in words is "fifty-five million, two hundred seventy-four thousand, eight hundred thirteen".