551873387 has 12 divisors (see below), whose sum is σ = 598256280. Its totient is φ = 508854528.

The previous prime is 551873359. The next prime is 551873417. The reversal of 551873387 is 783378155.

It is not a de Polignac number, because 551873387 - 2¹⁸ = 551611243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551873317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272603 + ... + 274619.

It is an arithmetic number, because the mean of its divisors is an integer number (49854690).

Almost surely, 2^551873387 is an apocalyptic number.

551873387 is a deficient number, since it is larger than the sum of its proper divisors (46382893).

551873387 is a wasteful number, since it uses less digits than its factorization.

551873387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662 (or 3649 counting only the distinct ones).

The product of its digits is 705600, while the sum is 47.

The square root of 551873387 is about 23491.9855908350. The cubic root of 551873387 is about 820.2504623563.

The spelling of 551873387 in words is "five hundred fifty-one million, eight hundred seventy-three thousand, three hundred eighty-seven".