346473521 has 2 divisors, whose sum is σ = 346473522. Its totient is φ = 346473520.

The previous prime is 346473511. The next prime is 346473551. The reversal of 346473521 is 125374643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327429025 + 19044496 = 18095^2 + 4364^2 .

It is a cyclic number.

It is not a de Polignac number, because 346473521 - 2¹⁸ = 346211377 is a prime.

It is equal to p_18624284 and since 346473521 and 18624284 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (346473511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173236760 + 173236761.

It is an arithmetic number, because the mean of its divisors is an integer number (173236761).

Almost surely, 2^346473521 is an apocalyptic number.

It is an amenable number.

346473521 is a deficient number, since it is larger than the sum of its proper divisors (1).

346473521 is an equidigital number, since it uses as much as digits as its factorization.

346473521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 346473521 is about 18613.7992091889. The cubic root of 346473521 is about 702.3550076266.

The spelling of 346473521 in words is "three hundred forty-six million, four hundred seventy-three thousand, five hundred twenty-one".