261352162 has 4 divisors (see below), whose sum is σ = 392028246. Its totient is φ = 130676080.

The previous prime is 261352141. The next prime is 261352171. The reversal of 261352162 is 261253162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 208484721 + 52867441 = 14439^2 + 7271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 261352162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65338039 + ... + 65338042.

Almost surely, 2^261352162 is an apocalyptic number.

261352162 is a deficient number, since it is larger than the sum of its proper divisors (130676084).

261352162 is a wasteful number, since it uses less digits than its factorization.

261352162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130676083.

The product of its digits is 4320, while the sum is 28.

The square root of 261352162 is about 16166.3898876651. The cubic root of 261352162 is about 639.3549506659.

The spelling of 261352162 in words is "two hundred sixty-one million, three hundred fifty-two thousand, one hundred sixty-two".