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BaseRepresentation
bin1101000100011011
32201102122
431010123
53203111
61051455
7312032
oct150433
981378
1053531
1137245
1226b8b
131b49a
1415719
1510cdb
hexd11b

53531 has 4 divisors (see below), whose sum is σ = 54000. Its totient is φ = 53064.

The previous prime is 53527. The next prime is 53549. The reversal of 53531 is 13535.

53531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13535 = 52707.

It is a cyclic number.

It is not a de Polignac number, because 53531 - 22 = 53527 is a prime.

It is a super-2 number, since 2×535312 = 5731135922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551) 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, 65 + ... + 333.

It is an arithmetic number, because the mean of its divisors is an integer number (13500).

253531 is an apocalyptic number.

53531 is a deficient number, since it is larger than the sum of its proper divisors (469).

53531 is a wasteful number, since it uses less digits than its factorization.

53531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468.

The product of its digits is 225, while the sum is 17.

The square root of 53531 is about 231.3676727635. The cubic root of 53531 is about 37.6878866866.

The spelling of 53531 in words is "fifty-three thousand, five hundred thirty-one".

Divisors: 1 199 269 53531