5515515061 has 4 divisors (see below), whose sum is σ = 6303445792. Its totient is φ = 4727584332.

The previous prime is 5515515059. The next prime is 5515515077. The reversal of 5515515061 is 1605155155.

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.

It is a cyclic number.

It is not a de Polignac number, because 5515515061 - 2¹ = 5515515059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515515361) 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, 393965355 + ... + 393965368.

It is an arithmetic number, because the mean of its divisors is an integer number (1575861448).

Almost surely, 2^5515515061 is an apocalyptic number.

It is an amenable number.

5515515061 is a deficient number, since it is larger than the sum of its proper divisors (787930731).

5515515061 is an equidigital number, since it uses as much as digits as its factorization.

5515515061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787930730.

The product of its (nonzero) digits is 18750, while the sum is 34.

The square root of 5515515061 is about 74266.5137259048. The cubic root of 5515515061 is about 1766.8324145231.

The spelling of 5515515061 in words is "five billion, five hundred fifteen million, five hundred fifteen thousand, sixty-one".