345537 has 6 divisors (see below), whose sum is σ = 499122. Its totient is φ = 230352.

The previous prime is 345533. The next prime is 345547. The reversal of 345537 is 735543.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 269361 + 76176 = 519^2 + 276^2 .

It is not a de Polignac number, because 345537 - 2² = 345533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345537.

It is not an unprimeable number, because it can be changed into a prime (345533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19188 + ... + 19205.

It is an arithmetic number, because the mean of its divisors is an integer number (83187).

2³⁴⁵⁵³⁷ is an apocalyptic number.

It is an amenable number.

345537 is a deficient number, since it is larger than the sum of its proper divisors (153585).

345537 is a wasteful number, since it uses less digits than its factorization.

345537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38399 (or 38396 counting only the distinct ones).

The product of its digits is 6300, while the sum is 27.

The square root of 345537 is about 587.8239532377. The cubic root of 345537 is about 70.1721612654.

The spelling of 345537 in words is "three hundred forty-five thousand, five hundred thirty-seven".