7256945 has 8 divisors (see below), whose sum is σ = 8989440. Its totient is φ = 5618160.

The previous prime is 7256911. The next prime is 7256947. The reversal of 7256945 is 5496527.

It is a happy number.

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

It is not a de Polignac number, because 7256945 - 2²² = 3062641 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7256899 and 7256908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7256947) 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, 23255 + ... + 23564.

It is an arithmetic number, because the mean of its divisors is an integer number (1123680).

Almost surely, 2^7256945 is an apocalyptic number.

It is an amenable number.

7256945 is a deficient number, since it is larger than the sum of its proper divisors (1732495).

7256945 is a wasteful number, since it uses less digits than its factorization.

7256945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46855.

The product of its digits is 75600, while the sum is 38.

The square root of 7256945 is about 2693.8717489888. The cubic root of 7256945 is about 193.6056128561.

The spelling of 7256945 in words is "seven million, two hundred fifty-six thousand, nine hundred forty-five".