535651 has 4 divisors (see below), whose sum is σ = 548152. Its totient is φ = 523152.

The previous prime is 535637. The next prime is 535663. The reversal of 535651 is 156535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156535 = 5 ⋅31307.

It is a cyclic number.

It is not a de Polignac number, because 535651 - 2⁷ = 535523 is a prime.

It is a Duffinian number.

535651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (535151) 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, 6186 + ... + 6271.

It is an arithmetic number, because the mean of its divisors is an integer number (137038).

2⁵³⁵⁶⁵¹ is an apocalyptic number.

535651 is a deficient number, since it is larger than the sum of its proper divisors (12501).

535651 is a wasteful number, since it uses less digits than its factorization.

535651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12500.

The product of its digits is 2250, while the sum is 25.

The square root of 535651 is about 731.8818210613. The cubic root of 535651 is about 81.2133278292.

The spelling of 535651 in words is "five hundred thirty-five thousand, six hundred fifty-one".