551213525312155 has 4 divisors (see below), whose sum is σ = 661456230374592. Its totient is φ = 440970820249720.

The previous prime is 551213525312143. The next prime is 551213525312221.

551213525312155 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 551213525312155 - 2⁵ = 551213525312123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55121352531211 + ... + 55121352531220.

It is an arithmetic number, because the mean of its divisors is an integer number (165364057593648).

Almost surely, 2^{551213525312155} is an apocalyptic number.

551213525312155 is a deficient number, since it is larger than the sum of its proper divisors (110242705062437).

551213525312155 is a wasteful number, since it uses less digits than its factorization.

551213525312155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110242705062436.

The product of its digits is 1125000, while the sum is 46.

The spelling of 551213525312155 in words is "five hundred fifty-one trillion, two hundred thirteen billion, five hundred twenty-five million, three hundred twelve thousand, one hundred fifty-five".