55264391 has 8 divisors (see below), whose sum is σ = 68017824. Its totient is φ = 43725600.

The previous prime is 55264381. The next prime is 55264397. The reversal of 55264391 is 19346255.

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 55264391 - 2⁶ = 55264327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55264397) 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, 303560 + ... + 303741.

It is an arithmetic number, because the mean of its divisors is an integer number (8502228).

Almost surely, 2^55264391 is an apocalyptic number.

55264391 is a deficient number, since it is larger than the sum of its proper divisors (12753433).

55264391 is a wasteful number, since it uses less digits than its factorization.

55264391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607321.

The product of its digits is 32400, while the sum is 35.

The square root of 55264391 is about 7434.0023540486. The cubic root of 55264391 is about 380.9036458120.

Subtracting from 55264391 its sum of digits (35), we obtain a square (55264356 = 7434²).

It can be divided in two parts, 55264 and 391, that added together give a palindrome (55655).

The spelling of 55264391 in words is "fifty-five million, two hundred sixty-four thousand, three hundred ninety-one".