352772921 has 2 divisors, whose sum is σ = 352772922. Its totient is φ = 352772920.

The previous prime is 352772891. The next prime is 352772923. The reversal of 352772921 is 129277253.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304886521 + 47886400 = 17461^2 + 6920^2 .

It is a cyclic number.

It is not a de Polignac number, because 352772921 - 2¹⁰ = 352771897 is a prime.

Together with 352772923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (352772923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176386460 + 176386461.

It is an arithmetic number, because the mean of its divisors is an integer number (176386461).

Almost surely, 2^352772921 is an apocalyptic number.

It is an amenable number.

352772921 is a deficient number, since it is larger than the sum of its proper divisors (1).

352772921 is an equidigital number, since it uses as much as digits as its factorization.

352772921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 352772921 is about 18782.2501580615. The cubic root of 352772921 is about 706.5860847902.

The spelling of 352772921 in words is "three hundred fifty-two million, seven hundred seventy-two thousand, nine hundred twenty-one".