261337075 has 12 divisors (see below), whose sum is σ = 331963128. Its totient is φ = 203969600.

The previous prime is 261337033. The next prime is 261337079. The reversal of 261337075 is 570733162.

It is not a de Polignac number, because 261337075 - 2¹¹ = 261335027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261337075.

It is not an unprimeable number, because it can be changed into a prime (261337079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126457 + ... + 128506.

It is an arithmetic number, because the mean of its divisors is an integer number (27663594).

Almost surely, 2^261337075 is an apocalyptic number.

261337075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261337075 is a deficient number, since it is larger than the sum of its proper divisors (70626053).

261337075 is a wasteful number, since it uses less digits than its factorization.

261337075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255014 (or 255009 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 261337075 is about 16165.9232646948. The cubic root of 261337075 is about 639.3426478102.

The spelling of 261337075 in words is "two hundred sixty-one million, three hundred thirty-seven thousand, seventy-five".