5535621 has 40 divisors (see below), whose sum is σ = 10191104. Its totient is φ = 2916000.

The previous prime is 5535619. The next prime is 5535623. The reversal of 5535621 is 1265355.

5535621 is a `hidden beast` number, since 5 + 5 + 35 + 621 = 666.

It is an interprime number because it is at equal distance from previous prime (5535619) and next prime (5535623).

It is not a de Polignac number, because 5535621 - 2¹ = 5535619 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5535623) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6996 + ... + 7746.

Almost surely, 2^5535621 is an apocalyptic number.

It is an amenable number.

5535621 is a deficient number, since it is larger than the sum of its proper divisors (4655483).

5535621 is a wasteful number, since it uses less digits than its factorization.

5535621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 774 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 5535621 is about 2352.7900458817. The cubic root of 5535621 is about 176.8976713896.

The spelling of 5535621 in words is "five million, five hundred thirty-five thousand, six hundred twenty-one".