551234145 has 32 divisors (see below), whose sum is σ = 1099607040. Its totient is φ = 229083840.

The previous prime is 551234143. The next prime is 551234149. The reversal of 551234145 is 541432155.

It is not a de Polignac number, because 551234145 - 2¹ = 551234143 is a prime.

It is a super-2 number, since 2×551234145² = 607718165227762050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551234143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237475 + ... + 239784.

It is an arithmetic number, because the mean of its divisors is an integer number (34362720).

Almost surely, 2^551234145 is an apocalyptic number.

551234145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551234145 is a deficient number, since it is larger than the sum of its proper divisors (548372895).

551234145 is a wasteful number, since it uses less digits than its factorization.

551234145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477285.

The product of its digits is 12000, while the sum is 30.

The square root of 551234145 is about 23478.3761150553. The cubic root of 551234145 is about 819.9336377982.

The spelling of 551234145 in words is "five hundred fifty-one million, two hundred thirty-four thousand, one hundred forty-five".