5551537 has 4 divisors (see below), whose sum is σ = 5878116. Its totient is φ = 5224960.

The previous prime is 5551531. The next prime is 5551583. The reversal of 5551537 is 7351555.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4004001 + 1547536 = 2001^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551537 - 2³ = 5551529 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5551499 and 5551508.

It is not an unprimeable number, because it can be changed into a prime (5551531) 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, 163264 + ... + 163297.

It is an arithmetic number, because the mean of its divisors is an integer number (1469529).

Almost surely, 2^5551537 is an apocalyptic number.

It is an amenable number.

5551537 is a deficient number, since it is larger than the sum of its proper divisors (326579).

5551537 is a wasteful number, since it uses less digits than its factorization.

5551537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326578.

The product of its digits is 13125, while the sum is 31.

The square root of 5551537 is about 2356.1699853788. The cubic root of 5551537 is about 177.0670477049.

The spelling of 5551537 in words is "five million, five hundred fifty-one thousand, five hundred thirty-seven".