5551523 has 4 divisors (see below), whose sum is σ = 5686968. Its totient is φ = 5416080.

The previous prime is 5551501. The next prime is 5551529. The reversal of 5551523 is 3251555.

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 5551523 - 2⁶ = 5551459 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5551492 and 5551501.

It is not an unprimeable number, because it can be changed into a prime (5551529) 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, 67661 + ... + 67742.

It is an arithmetic number, because the mean of its divisors is an integer number (1421742).

Almost surely, 2^5551523 is an apocalyptic number.

5551523 is a deficient number, since it is larger than the sum of its proper divisors (135445).

5551523 is a wasteful number, since it uses less digits than its factorization.

5551523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135444.

The product of its digits is 3750, while the sum is 26.

The square root of 5551523 is about 2356.1670144538. The cubic root of 5551523 is about 177.0668988608.

Subtracting from 5551523 its reverse (3251555), we obtain a cube (2299968 = 132³).

The spelling of 5551523 in words is "five million, five hundred fifty-one thousand, five hundred twenty-three".