272661901 has 2 divisors, whose sum is σ = 272661902. Its totient is φ = 272661900.

The previous prime is 272661863. The next prime is 272661919. The reversal of 272661901 is 109166272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232593001 + 40068900 = 15251^2 + 6330^2 .

It is a cyclic number.

It is not a de Polignac number, because 272661901 - 2⁷ = 272661773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272661101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136330950 + 136330951.

It is an arithmetic number, because the mean of its divisors is an integer number (136330951).

Almost surely, 2^272661901 is an apocalyptic number.

It is an amenable number.

272661901 is a deficient number, since it is larger than the sum of its proper divisors (1).

272661901 is an equidigital number, since it uses as much as digits as its factorization.

272661901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 272661901 is about 16512.4771309456. The cubic root of 272661901 is about 648.4474988047.

The spelling of 272661901 in words is "two hundred seventy-two million, six hundred sixty-one thousand, nine hundred one".