1087922261 has 2 divisors, whose sum is σ = 1087922262. Its totient is φ = 1087922260.

The previous prime is 1087922219. The next prime is 1087922263. The reversal of 1087922261 is 1622297801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 839260900 + 248661361 = 28970^2 + 15769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087922261 - 2²⁶ = 1020813397 is a prime.

Together with 1087922263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087922263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543961130 + 543961131.

It is an arithmetic number, because the mean of its divisors is an integer number (543961131).

Almost surely, 2^1087922261 is an apocalyptic number.

It is an amenable number.

1087922261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087922261 is an equidigital number, since it uses as much as digits as its factorization.

1087922261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 1087922261 is about 32983.6665790812. Note that the first 3 decimals coincide. The cubic root of 1087922261 is about 1028.4881394961.

The spelling of 1087922261 in words is "one billion, eighty-seven million, nine hundred twenty-two thousand, two hundred sixty-one".