551534445 has 72 divisors (see below), whose sum is σ = 1213224480. Its totient is φ = 229199040.

The previous prime is 551534443. The next prime is 551534453. The reversal of 551534445 is 544435155.

It is not a de Polignac number, because 551534445 - 2¹ = 551534443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551534443) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12886 + ... + 35624.

It is an arithmetic number, because the mean of its divisors is an integer number (16850340).

Almost surely, 2^551534445 is an apocalyptic number.

551534445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551534445 is an abundant number, since it is smaller than the sum of its proper divisors (661690035).

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

551534445 is a wasteful number, since it uses less digits than its factorization.

551534445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22775 (or 22765 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 551534445 is about 23484.7704906818. The cubic root of 551534445 is about 820.0825045876.

The spelling of 551534445 in words is "five hundred fifty-one million, five hundred thirty-four thousand, four hundred forty-five".