550515013 has 4 divisors (see below), whose sum is σ = 557147808. Its totient is φ = 543882220.

The previous prime is 550515001. The next prime is 550515023. The reversal of 550515013 is 310515055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310515055 = 5 ⋅62103011.

It is a cyclic number.

It is not a de Polignac number, because 550515013 - 2⁵ = 550514981 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 (550515023) 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, 3316273 + ... + 3316438.

It is an arithmetic number, because the mean of its divisors is an integer number (139286952).

Almost surely, 2^550515013 is an apocalyptic number.

It is an amenable number.

550515013 is a deficient number, since it is larger than the sum of its proper divisors (6632795).

550515013 is an equidigital number, since it uses as much as digits as its factorization.

550515013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632794.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 550515013 is about 23463.0563439634. The cubic root of 550515013 is about 819.5769248235.

The spelling of 550515013 in words is "five hundred fifty million, five hundred fifteen thousand, thirteen".