551455023505 has 4 divisors (see below), whose sum is σ = 661746028212. Its totient is φ = 441164018800.

The previous prime is 551455023479. The next prime is 551455023517. The reversal of 551455023505 is 505320554155.

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 214487544384 + 336967479121 = 463128^2 + 580489^2 .

It is not a de Polignac number, because 551455023505 - 2¹¹ = 551455021457 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, 55145502346 + ... + 55145502355.

It is an arithmetic number, because the mean of its divisors is an integer number (165436507053).

Almost surely, 2^551455023505 is an apocalyptic number.

It is an amenable number.

551455023505 is a deficient number, since it is larger than the sum of its proper divisors (110291004707).

551455023505 is a wasteful number, since it uses less digits than its factorization.

551455023505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110291004706.

The product of its (nonzero) digits is 375000, while the sum is 40.

The spelling of 551455023505 in words is "five hundred fifty-one billion, four hundred fifty-five million, twenty-three thousand, five hundred five".