345745513 has 4 divisors (see below), whose sum is σ = 346008960. Its totient is φ = 345482068.

The previous prime is 345745469. The next prime is 345745529. The reversal of 345745513 is 315547543.

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, and also an emirpimes, since its reverse is a distinct semiprime: 315547543 = 31 ⋅10178953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345745513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345745013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129745 + ... + 132382.

It is an arithmetic number, because the mean of its divisors is an integer number (86502240).

Almost surely, 2^345745513 is an apocalyptic number.

It is an amenable number.

345745513 is a deficient number, since it is larger than the sum of its proper divisors (263447).

345745513 is a wasteful number, since it uses less digits than its factorization.

345745513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263446.

The product of its digits is 126000, while the sum is 37.

The square root of 345745513 is about 18594.2333264913. The cubic root of 345745513 is about 701.8627346922.

The spelling of 345745513 in words is "three hundred forty-five million, seven hundred forty-five thousand, five hundred thirteen".