260776551 has 16 divisors (see below), whose sum is σ = 402406400. Its totient is φ = 147127968.

The previous prime is 260776543. The next prime is 260776559. The reversal of 260776551 is 155677062.

It is an interprime number because it is at equal distance from previous prime (260776543) and next prime (260776559).

It is not a de Polignac number, because 260776551 - 2³ = 260776543 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 (260776559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76936 + ... + 80253.

It is an arithmetic number, because the mean of its divisors is an integer number (25150400).

Almost surely, 2^260776551 is an apocalyptic number.

260776551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

260776551 is a deficient number, since it is larger than the sum of its proper divisors (141629849).

260776551 is a wasteful number, since it uses less digits than its factorization.

260776551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157278.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 260776551 is about 16148.5773676816. The cubic root of 260776551 is about 638.8852265325.

The spelling of 260776551 in words is "two hundred sixty million, seven hundred seventy-six thousand, five hundred fifty-one".