551187396 has 96 divisors (see below), whose sum is σ = 1531716480. Its totient is φ = 170790912.

The previous prime is 551187353. The next prime is 551187437. The reversal of 551187396 is 693781155.

It is a happy number.

551187396 is a `hidden beast` number, since 551 + 1 + 8 + 7 + 3 + 96 = 666.

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, 150580 + ... + 154196.

It is an arithmetic number, because the mean of its divisors is an integer number (15955380).

Almost surely, 2^551187396 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 551187396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765858240).

551187396 is an abundant number, since it is smaller than the sum of its proper divisors (980529084).

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

551187396 is a wasteful number, since it uses less digits than its factorization.

551187396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730 (or 3722 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 551187396 is about 23477.3805182776. The cubic root of 551187396 is about 819.9104581980.

The spelling of 551187396 in words is "five hundred fifty-one million, one hundred eighty-seven thousand, three hundred ninety-six".