261460651 has 2 divisors, whose sum is σ = 261460652. Its totient is φ = 261460650.

The previous prime is 261460637. The next prime is 261460657. The reversal of 261460651 is 156064162.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261460651 is a prime.

It is equal to p_14271358 and since 261460651 and 14271358 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (261460657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130730325 + 130730326.

It is an arithmetic number, because the mean of its divisors is an integer number (130730326).

Almost surely, 2^261460651 is an apocalyptic number.

261460651 is a deficient number, since it is larger than the sum of its proper divisors (1).

261460651 is an equidigital number, since it uses as much as digits as its factorization.

261460651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 261460651 is about 16169.7449268688. The cubic root of 261460651 is about 639.4434052415.

The spelling of 261460651 in words is "two hundred sixty-one million, four hundred sixty thousand, six hundred fifty-one".