5551311013 has 4 divisors (see below), whose sum is σ = 5551497900. Its totient is φ = 5551124128.

The previous prime is 5551311011. The next prime is 5551311023. The reversal of 5551311013 is 3101131555.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3440643649 + 2110667364 = 58657^2 + 45942^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551311013 - 2¹ = 5551311011 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 (5551311011) 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, 37870 + ... + 111967.

It is an arithmetic number, because the mean of its divisors is an integer number (1387874475).

Almost surely, 2^5551311013 is an apocalyptic number.

It is an amenable number.

5551311013 is a deficient number, since it is larger than the sum of its proper divisors (186887).

5551311013 is a wasteful number, since it uses less digits than its factorization.

5551311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186886.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 5551311013 is about 74507.1205523338. The cubic root of 5551311013 is about 1770.6464504336.

Adding to 5551311013 its reverse (3101131555), we get a palindrome (8652442568).

The spelling of 5551311013 in words is "five billion, five hundred fifty-one million, three hundred eleven thousand, thirteen".