551455513304613 has 4 divisors (see below), whose sum is σ = 735274017739488. Its totient is φ = 367637008869740.

The previous prime is 551455513304519. The next prime is 551455513304617. The reversal of 551455513304613 is 316403315554155.

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 551455513304613 - 2⁴⁰ = 550356001676837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551455513304617) 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, 91909252217433 + ... + 91909252217438.

It is an arithmetic number, because the mean of its divisors is an integer number (183818504434872).

Almost surely, 2^{551455513304613} is an apocalyptic number.

It is an amenable number.

551455513304613 is a deficient number, since it is larger than the sum of its proper divisors (183818504434875).

551455513304613 is a wasteful number, since it uses less digits than its factorization.

551455513304613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183818504434874.

The product of its (nonzero) digits is 8100000, while the sum is 51.

Adding to 551455513304613 its reverse (316403315554155), we get a palindrome (867858828858768).

The spelling of 551455513304613 in words is "five hundred fifty-one trillion, four hundred fifty-five billion, five hundred thirteen million, three hundred four thousand, six hundred thirteen".