5551222015 has 4 divisors (see below), whose sum is σ = 6661466424. Its totient is φ = 4440977608.

The previous prime is 5551222013. The next prime is 5551222037. The reversal of 5551222015 is 5102221555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5102221555 = 5 ⋅1020444311.

It is a cyclic number.

It is not a de Polignac number, because 5551222015 - 2¹ = 5551222013 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 (5551222013) 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, 555122197 + ... + 555122206.

It is an arithmetic number, because the mean of its divisors is an integer number (1665366606).

Almost surely, 2^5551222015 is an apocalyptic number.

5551222015 is a deficient number, since it is larger than the sum of its proper divisors (1110244409).

5551222015 is a wasteful number, since it uses less digits than its factorization.

5551222015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110244408.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 5551222015 is about 74506.5233050100. The cubic root of 5551222015 is about 1770.6369881142.

The spelling of 5551222015 in words is "five billion, five hundred fifty-one million, two hundred twenty-two thousand, fifteen".