345072511 has 16 divisors (see below), whose sum is σ = 418535424. Its totient is φ = 277732224.

The previous prime is 345072503. The next prime is 345072517. The reversal of 345072511 is 115270543.

It is a happy number.

It is not a de Polignac number, because 345072511 - 2³ = 345072503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345072511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345072517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51966 + ... + 58228.

It is an arithmetic number, because the mean of its divisors is an integer number (26158464).

Almost surely, 2^345072511 is an apocalyptic number.

345072511 is a deficient number, since it is larger than the sum of its proper divisors (73462913).

345072511 is a wasteful number, since it uses less digits than its factorization.

345072511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6750.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 345072511 is about 18576.1274489599. The cubic root of 345072511 is about 701.4070412976.

The spelling of 345072511 in words is "three hundred forty-five million, seventy-two thousand, five hundred eleven".