2215044551 has 4 divisors (see below), whose sum is σ = 2217280704. Its totient is φ = 2212808400.

The previous prime is 2215044541. The next prime is 2215044571. The reversal of 2215044551 is 1554405122.

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 2215044551 - 2⁶ = 2215044487 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 (2215044511) 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, 1116590 + ... + 1118571.

It is an arithmetic number, because the mean of its divisors is an integer number (554320176).

Almost surely, 2^2215044551 is an apocalyptic number.

2215044551 is a deficient number, since it is larger than the sum of its proper divisors (2236153).

2215044551 is an equidigital number, since it uses as much as digits as its factorization.

2215044551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236152.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2215044551 is about 47064.2598050793. The cubic root of 2215044551 is about 1303.5493833546.

Adding to 2215044551 its reverse (1554405122), we get a palindrome (3769449673).

The spelling of 2215044551 in words is "two billion, two hundred fifteen million, forty-four thousand, five hundred fifty-one".