551388396 has 96 divisors (see below), whose sum is σ = 1427005440. Its totient is φ = 164646144.

The previous prime is 551388389. The next prime is 551388403. The reversal of 551388396 is 693883155.

It is an interprime number because it is at equal distance from previous prime (551388389) and next prime (551388403).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1150885 + ... + 1151363.

It is an arithmetic number, because the mean of its divisors is an integer number (14864640).

Almost surely, 2^551388396 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 551388396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713502720).

551388396 is an abundant number, since it is smaller than the sum of its proper divisors (875617044).

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

551388396 is a wasteful number, since it uses less digits than its factorization.

551388396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 701 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 551388396 is about 23481.6608441567. The cubic root of 551388396 is about 820.0101109203.

The spelling of 551388396 in words is "five hundred fifty-one million, three hundred eighty-eight thousand, three hundred ninety-six".