87773291 has 2 divisors, whose sum is σ = 87773292. Its totient is φ = 87773290.

The previous prime is 87773281. The next prime is 87773311. The reversal of 87773291 is 19237778.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87773291 is a prime.

It is a super-2 number, since 2×87773291² = 15408301225941362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87773281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43886645 + 43886646.

It is an arithmetic number, because the mean of its divisors is an integer number (43886646).

Almost surely, 2^87773291 is an apocalyptic number.

87773291 is a deficient number, since it is larger than the sum of its proper divisors (1).

87773291 is an equidigital number, since it uses as much as digits as its factorization.

87773291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 44.

The square root of 87773291 is about 9368.7400967259. The cubic root of 87773291 is about 444.4137227352.

The spelling of 87773291 in words is "eighty-seven million, seven hundred seventy-three thousand, two hundred ninety-one".