352422781 has 2 divisors, whose sum is σ = 352422782. Its totient is φ = 352422780.

The previous prime is 352422769. The next prime is 352422793. The reversal of 352422781 is 187224253.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (352422769) and next prime (352422793).

It can be written as a sum of positive squares in only one way, i.e., 250715556 + 101707225 = 15834^2 + 10085^2 .

It is an emirp because it is prime and its reverse (187224253) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 352422781 - 2¹⁵ = 352390013 is a prime.

It is a super-2 number, since 2×352422781² = 248403633135547922, which contains 22 as substring.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176211390 + 176211391.

It is an arithmetic number, because the mean of its divisors is an integer number (176211391).

Almost surely, 2^352422781 is an apocalyptic number.

It is an amenable number.

352422781 is a deficient number, since it is larger than the sum of its proper divisors (1).

352422781 is an equidigital number, since it uses as much as digits as its factorization.

352422781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 352422781 is about 18772.9268096373. The cubic root of 352422781 is about 706.3522365792.

The spelling of 352422781 in words is "three hundred fifty-two million, four hundred twenty-two thousand, seven hundred eighty-one".