5551387 has 8 divisors (see below), whose sum is σ = 5778432. Its totient is φ = 5327400.

The previous prime is 5551373. The next prime is 5551417. The reversal of 5551387 is 7831555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5551387 - 2¹¹ = 5549339 is a prime.

It is a Duffinian number.

5551387 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3378 + ... + 4744.

It is an arithmetic number, because the mean of its divisors is an integer number (722304).

Almost surely, 2^5551387 is an apocalyptic number.

5551387 is a deficient number, since it is larger than the sum of its proper divisors (227045).

5551387 is a wasteful number, since it uses less digits than its factorization.

5551387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529.

The product of its digits is 21000, while the sum is 34.

The square root of 5551387 is about 2356.1381538441. The cubic root of 5551387 is about 177.0654529336.

The spelling of 5551387 in words is "five million, five hundred fifty-one thousand, three hundred eighty-seven".