551253660 has 96 divisors (see below), whose sum is σ = 1578565632. Its totient is φ = 143700480.

The previous prime is 551253653. The next prime is 551253667. The reversal of 551253660 is 66352155.

It is an interprime number because it is at equal distance from previous prime (551253653) and next prime (551253667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551253667) 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, 555765 + ... + 556755.

It is an arithmetic number, because the mean of its divisors is an integer number (16443392).

Almost surely, 2^551253660 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 551253660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789282816).

551253660 is an abundant number, since it is smaller than the sum of its proper divisors (1027311972).

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

551253660 is a wasteful number, since it uses less digits than its factorization.

551253660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 551253660 is about 23478.7917065593. The cubic root of 551253660 is about 819.9433135511.

It can be divided in two parts, 55125 and 3660, that added together give a palindrome (58785).

The spelling of 551253660 in words is "five hundred fifty-one million, two hundred fifty-three thousand, six hundred sixty".