259772087 has 4 divisors (see below), whose sum is σ = 275052816. Its totient is φ = 244491360.

The previous prime is 259772081. The next prime is 259772089. The reversal of 259772087 is 780277952.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259772087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259772081) 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, 7640339 + ... + 7640372.

It is an arithmetic number, because the mean of its divisors is an integer number (68763204).

Almost surely, 2^259772087 is an apocalyptic number.

259772087 is a deficient number, since it is larger than the sum of its proper divisors (15280729).

259772087 is a wasteful number, since it uses less digits than its factorization.

259772087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15280728.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 259772087 is about 16117.4466650273. The cubic root of 259772087 is about 638.0638810457.

The spelling of 259772087 in words is "two hundred fifty-nine million, seven hundred seventy-two thousand, eighty-seven".