272105381 has 2 divisors, whose sum is σ = 272105382. Its totient is φ = 272105380.

The previous prime is 272105377. The next prime is 272105399. The reversal of 272105381 is 183501272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260822500 + 11282881 = 16150^2 + 3359^2 .

It is a cyclic number.

It is not a de Polignac number, because 272105381 - 2² = 272105377 is a prime.

It is a super-2 number, since 2×272105381² = 148082676738310322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272105371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136052690 + 136052691.

It is an arithmetic number, because the mean of its divisors is an integer number (136052691).

Almost surely, 2^272105381 is an apocalyptic number.

It is an amenable number.

272105381 is a deficient number, since it is larger than the sum of its proper divisors (1).

272105381 is an equidigital number, since it uses as much as digits as its factorization.

272105381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 272105381 is about 16495.6170239249. The cubic root of 272105381 is about 648.0060243369.

The spelling of 272105381 in words is "two hundred seventy-two million, one hundred five thousand, three hundred eighty-one".