261033004 has 12 divisors (see below), whose sum is σ = 457984800. Its totient is φ = 130180208.

The previous prime is 261032999. The next prime is 261033007. The reversal of 261033004 is 400330162.

261033004 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (261033007) 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, 82324 + ... + 85435.

It is an arithmetic number, because the mean of its divisors is an integer number (38165400).

Almost surely, 2^261033004 is an apocalyptic number.

It is an amenable number.

261033004 is a deficient number, since it is larger than the sum of its proper divisors (196951796).

261033004 is a wasteful number, since it uses less digits than its factorization.

261033004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168152 (or 168150 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 261033004 is about 16156.5158372714. The cubic root of 261033004 is about 639.0945888551.

Adding to 261033004 its reverse (400330162), we get a palindrome (661363166).

The spelling of 261033004 in words is "two hundred sixty-one million, thirty-three thousand, four".