551025550 has 24 divisors (see below), whose sum is σ = 1027262376. Its totient is φ = 219903840.

The previous prime is 551025511. The next prime is 551025551. The reversal of 551025550 is 55520155.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551025551) 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, 9712 + ... + 34588.

It is an arithmetic number, because the mean of its divisors is an integer number (42802599).

Almost surely, 2^551025550 is an apocalyptic number.

551025550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551025550 is a deficient number, since it is larger than the sum of its proper divisors (476236826).

551025550 is a wasteful number, since it uses less digits than its factorization.

551025550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25332 (or 25327 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 551025550 is about 23473.9334155995. The cubic root of 551025550 is about 819.8301998205.

The spelling of 551025550 in words is "five hundred fifty-one million, twenty-five thousand, five hundred fifty".