551251120 has 160 divisors (see below), whose sum is σ = 1545043968. Its totient is φ = 178827264.

The previous prime is 551251087. The next prime is 551251121. The reversal of 551251120 is 21152155.

551251120 = T₃₇₈ + T₃₇₉ + ... + T₁₄₉₇.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 551251091 and 551251100.

It is not an unprimeable number, because it can be changed into a prime (551251121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1635592 + ... + 1635928.

Almost surely, 2^551251120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551251120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772521984).

551251120 is an abundant number, since it is smaller than the sum of its proper divisors (993792848).

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

551251120 is a wasteful number, since it uses less digits than its factorization.

551251120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 551251120 is about 23478.7376151274. The cubic root of 551251120 is about 819.9420542040.

The spelling of 551251120 in words is "five hundred fifty-one million, two hundred fifty-one thousand, one hundred twenty".