34745257 has 4 divisors (see below), whose sum is σ = 35684356. Its totient is φ = 33806160.

The previous prime is 34745239. The next prime is 34745279. The reversal of 34745257 is 75254743.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33686416 + 1058841 = 5804^2 + 1029^2 .

It is a de Polignac number, because none of the positive numbers 2^k-34745257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 939061 = 34745257 / (3 + 4 + 7 + 4 + 5 + 2 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34745657) 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, 469494 + ... + 469567.

It is an arithmetic number, because the mean of its divisors is an integer number (8921089).

Almost surely, 2^34745257 is an apocalyptic number.

34745257 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

34745257 is a deficient number, since it is larger than the sum of its proper divisors (939099).

34745257 is an equidigital number, since it uses as much as digits as its factorization.

34745257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939098.

The product of its digits is 117600, while the sum is 37.

The square root of 34745257 is about 5894.5107515382. The cubic root of 34745257 is about 326.3110966351.

The spelling of 34745257 in words is "thirty-four million, seven hundred forty-five thousand, two hundred fifty-seven".