345216501 has 48 divisors (see below), whose sum is σ = 609807744. Its totient is φ = 183693312.

The previous prime is 345216497. The next prime is 345216503. The reversal of 345216501 is 105612543.

345216501 is a `hidden beast` number, since 3 + 4 + 5 + 2 + 1 + 650 + 1 = 666.

It is not a de Polignac number, because 345216501 - 2² = 345216497 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345216503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102226 + ... + 105548.

It is an arithmetic number, because the mean of its divisors is an integer number (12704328).

Almost surely, 2^345216501 is an apocalyptic number.

It is an amenable number.

345216501 is a deficient number, since it is larger than the sum of its proper divisors (264591243).

345216501 is a wasteful number, since it uses less digits than its factorization.

345216501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 3447 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 345216501 is about 18580.0027179761. The cubic root of 345216501 is about 701.5045875159.

The spelling of 345216501 in words is "three hundred forty-five million, two hundred sixteen thousand, five hundred one".