261502 has 8 divisors (see below), whose sum is σ = 399816. Its totient is φ = 128232.

The previous prime is 261467. The next prime is 261509. The reversal of 261502 is 205162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261509) 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, 1128 + ... + 1339.

It is an arithmetic number, because the mean of its divisors is an integer number (49977).

2²⁶¹⁵⁰² is an apocalyptic number.

261502 is a deficient number, since it is larger than the sum of its proper divisors (138314).

261502 is a wasteful number, since it uses less digits than its factorization.

261502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 261502 is about 511.3726625466. The cubic root of 261502 is about 63.9477111973.

Adding to 261502 its reverse (205162), we get a palindrome (466664).

It can be divided in two parts, 2 and 61502, that added together give a square (61504 = 248²).

The spelling of 261502 in words is "two hundred sixty-one thousand, five hundred two".