551253612 has 144 divisors (see below), whose sum is σ = 1676693760. Its totient is φ = 136888704.

The previous prime is 551253607. The next prime is 551253623. The reversal of 551253612 is 216352155.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 551253612.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3381843 + ... + 3382005.

Almost surely, 2^551253612 is an apocalyptic number.

551253612 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551253612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838346880).

551253612 is an abundant number, since it is smaller than the sum of its proper divisors (1125440148).

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

551253612 is a wasteful number, since it uses less digits than its factorization.

551253612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 207 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 551253612 is about 23478.7906843602. The cubic root of 551253612 is about 819.9432897525.

The spelling of 551253612 in words is "five hundred fifty-one million, two hundred fifty-three thousand, six hundred twelve".