224115551 has 4 divisors (see below), whose sum is σ = 244489704. Its totient is φ = 203741400.

The previous prime is 224115497. The next prime is 224115557. The reversal of 224115551 is 155511422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 224115551 - 2⁶ = 224115487 is a prime.

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 224115551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224115557) 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, 10187060 + ... + 10187081.

It is an arithmetic number, because the mean of its divisors is an integer number (61122426).

Almost surely, 2^224115551 is an apocalyptic number.

224115551 is a deficient number, since it is larger than the sum of its proper divisors (20374153).

224115551 is a wasteful number, since it uses less digits than its factorization.

224115551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20374152.

The product of its digits is 2000, while the sum is 26.

The square root of 224115551 is about 14970.4893373597. The cubic root of 224115551 is about 607.4222052606.

Adding to 224115551 its reverse (155511422), we get a palindrome (379626973).

The spelling of 224115551 in words is "two hundred twenty-four million, one hundred fifteen thousand, five hundred fifty-one".