352051421 has 2 divisors, whose sum is σ = 352051422. Its totient is φ = 352051420.

The previous prime is 352051373. The next prime is 352051429. The reversal of 352051421 is 124150253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198415396 + 153636025 = 14086^2 + 12395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-352051421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352051429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176025710 + 176025711.

It is an arithmetic number, because the mean of its divisors is an integer number (176025711).

Almost surely, 2^352051421 is an apocalyptic number.

It is an amenable number.

352051421 is a deficient number, since it is larger than the sum of its proper divisors (1).

352051421 is an equidigital number, since it uses as much as digits as its factorization.

352051421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 352051421 is about 18763.0333635050. The cubic root of 352051421 is about 706.1040468385.

The spelling of 352051421 in words is "three hundred fifty-two million, fifty-one thousand, four hundred twenty-one".