276555401 has 2 divisors, whose sum is σ = 276555402. Its totient is φ = 276555400.

The previous prime is 276555359. The next prime is 276555421. The reversal of 276555401 is 104555672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276357376 + 198025 = 16624^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 276555401 - 2²⁶ = 209446537 is a prime.

It is not a weakly prime, because it can be changed into another prime (276555421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138277700 + 138277701.

It is an arithmetic number, because the mean of its divisors is an integer number (138277701).

Almost surely, 2^276555401 is an apocalyptic number.

It is an amenable number.

276555401 is a deficient number, since it is larger than the sum of its proper divisors (1).

276555401 is an equidigital number, since it uses as much as digits as its factorization.

276555401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 276555401 is about 16629.9549307868. The cubic root of 276555401 is about 651.5194441864.

The spelling of 276555401 in words is "two hundred seventy-six million, five hundred fifty-five thousand, four hundred one".