551420155200 has 84 divisors (see below), whose sum is σ = 1809117641600. Its totient is φ = 147045373440.

The previous prime is 551420155147. The next prime is 551420155201. The reversal of 551420155200 is 2551024155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551420155201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57434800 + ... + 57444399.

Almost surely, 2^551420155200 is an apocalyptic number.

551420155200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551420155200 is an abundant number, since it is smaller than the sum of its proper divisors (1257697486400).

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

551420155200 is a wasteful number, since it uses less digits than its factorization.

551420155200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114879224 (or 114879209 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 551420155200 its reverse (2551024155), we get a palindrome (553971179355).

The spelling of 551420155200 in words is "five hundred fifty-one billion, four hundred twenty million, one hundred fifty-five thousand, two hundred".