7505945 has 8 divisors (see below), whose sum is σ = 9045960. Its totient is φ = 5978880.

The previous prime is 7505941. The next prime is 7505977. The reversal of 7505945 is 5495057.

7505945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1459264 + 6046681 = 1208^2 + 2459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7505945 - 2² = 7505941 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7505941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1910 + ... + 4319.

It is an arithmetic number, because the mean of its divisors is an integer number (1130745).

Almost surely, 2^7505945 is an apocalyptic number.

It is an amenable number.

7505945 is a deficient number, since it is larger than the sum of its proper divisors (1540015).

7505945 is a wasteful number, since it uses less digits than its factorization.

7505945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 7505945 is about 2739.6979760550. The cubic root of 7505945 is about 195.7950881503.

The spelling of 7505945 in words is "seven million, five hundred five thousand, nine hundred forty-five".