5500551 has 16 divisors (see below), whose sum is σ = 8561664. Its totient is φ = 3075744.

The previous prime is 5500543. The next prime is 5500567. The reversal of 5500551 is 1550055.

It is not a de Polignac number, because 5500551 - 2³ = 5500543 is a prime.

It is a super-2 number, since 2×5500551² = 60512122607202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5500591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1800 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (535104).

Almost surely, 2^5500551 is an apocalyptic number.

5500551 is a deficient number, since it is larger than the sum of its proper divisors (3061113).

5500551 is a wasteful number, since it uses less digits than its factorization.

5500551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 5500551 is about 2345.3253505644. The cubic root of 5500551 is about 176.5233111814.

The spelling of 5500551 in words is "five million, five hundred thousand, five hundred fifty-one".