551135531154 has 32 divisors (see below), whose sum is σ = 1238672502144. Its totient is φ = 162207112320.

The previous prime is 551135531153. The next prime is 551135531201. The reversal of 551135531154 is 451135531155.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (551135531153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153603427 + ... + 153607014.

It is an arithmetic number, because the mean of its divisors is an integer number (38708515692).

Almost surely, 2^551135531154 is an apocalyptic number.

551135531154 is an abundant number, since it is smaller than the sum of its proper divisors (687536970990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551135531154 is a wasteful number, since it uses less digits than its factorization.

551135531154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307210482.

The product of its digits is 112500, while the sum is 39.

Subtracting from 551135531154 its reverse (451135531155), we obtain a palindrome (99999999999).

It can be divided in two parts, 5511 and 35531154, that added together give a triangular number (35536665 = T₈₄₃₀).

The spelling of 551135531154 in words is "five hundred fifty-one billion, one hundred thirty-five million, five hundred thirty-one thousand, one hundred fifty-four".