5531551 has 4 divisors (see below), whose sum is σ = 5560704. Its totient is φ = 5502400.

The previous prime is 5531549. The next prime is 5531593. The reversal of 5531551 is 1551355.

5531551 = 66² + 67² + ... + 256².

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5531551 - 2¹ = 5531549 is a prime.

It is a Duffinian number.

5531551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5531521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14290 + ... + 14671.

It is an arithmetic number, because the mean of its divisors is an integer number (1390176).

Almost surely, 2^5531551 is an apocalyptic number.

5531551 is a deficient number, since it is larger than the sum of its proper divisors (29153).

5531551 is a wasteful number, since it uses less digits than its factorization.

5531551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29152.

The product of its digits is 1875, while the sum is 25.

The square root of 5531551 is about 2351.9249562858. The cubic root of 5531551 is about 176.8543067851.

The spelling of 5531551 in words is "five million, five hundred thirty-one thousand, five hundred fifty-one".