261003412 has 6 divisors (see below), whose sum is σ = 456755978. Its totient is φ = 130501704.

The previous prime is 261003409. The next prime is 261003481. The reversal of 261003412 is 214300162.

261003412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 167029776 + 93973636 = 12924^2 + 9694^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 261003412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32625423 + ... + 32625430.

Almost surely, 2^261003412 is an apocalyptic number.

It is an amenable number.

261003412 is a deficient number, since it is larger than the sum of its proper divisors (195752566).

261003412 is a wasteful number, since it uses less digits than its factorization.

261003412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65250857 (or 65250855 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 261003412 is about 16155.6000198074. The cubic root of 261003412 is about 639.0704376283.

Adding to 261003412 its reverse (214300162), we get a palindrome (475303574).

The spelling of 261003412 in words is "two hundred sixty-one million, three thousand, four hundred twelve".