55252331 has 4 divisors (see below), whose sum is σ = 55458000. Its totient is φ = 55046664.

The previous prime is 55252319. The next prime is 55252333. The reversal of 55252331 is 13325255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13325255 = 5 ⋅2665051.

It is a cyclic number.

It is not a de Polignac number, because 55252331 - 2¹⁰ = 55251307 is a prime.

It is a super-2 number, since 2×55252331² = 6105640161867122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55252331.

It is not an unprimeable number, because it can be changed into a prime (55252333) 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, 102431 + ... + 102968.

It is an arithmetic number, because the mean of its divisors is an integer number (13864500).

Almost surely, 2^55252331 is an apocalyptic number.

55252331 is a deficient number, since it is larger than the sum of its proper divisors (205669).

55252331 is a wasteful number, since it uses less digits than its factorization.

55252331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205668.

The product of its digits is 4500, while the sum is 26.

The square root of 55252331 is about 7433.1911720337. The cubic root of 55252331 is about 380.8759363950.

Adding to 55252331 its reverse (13325255), we get a palindrome (68577586).

The spelling of 55252331 in words is "fifty-five million, two hundred fifty-two thousand, three hundred thirty-one".