345020501 has 4 divisors (see below), whose sum is σ = 394309152. Its totient is φ = 295731852.

The previous prime is 345020479. The next prime is 345020509. The reversal of 345020501 is 105020543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345020501 - 2¹⁸ = 344758357 is a prime.

It is a super-2 number, since 2×345020501² = 238078292220582002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345020509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24644315 + ... + 24644328.

It is an arithmetic number, because the mean of its divisors is an integer number (98577288).

Almost surely, 2^345020501 is an apocalyptic number.

It is an amenable number.

345020501 is a deficient number, since it is larger than the sum of its proper divisors (49288651).

345020501 is an equidigital number, since it uses as much as digits as its factorization.

345020501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49288650.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 345020501 is about 18574.7274811772. The cubic root of 345020501 is about 701.3718003825.

The spelling of 345020501 in words is "three hundred forty-five million, twenty thousand, five hundred one".