7148945 has 8 divisors (see below), whose sum is σ = 8655336. Its totient is φ = 5668096.

The previous prime is 7148927. The next prime is 7148951. The reversal of 7148945 is 5498417.

It can be written as a sum of positive squares in 4 ways, for example, as 913936 + 6235009 = 956^2 + 2497^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7148945 is a prime.

It is a super-2 number, since 2×7148945² = 102214829226050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7148899 and 7148908.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5762 + ... + 6891.

It is an arithmetic number, because the mean of its divisors is an integer number (1081917).

Almost surely, 2^7148945 is an apocalyptic number.

It is an amenable number.

7148945 is a deficient number, since it is larger than the sum of its proper divisors (1506391).

7148945 is a wasteful number, since it uses less digits than its factorization.

7148945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12771.

The product of its digits is 40320, while the sum is 38.

The square root of 7148945 is about 2673.7511103317. The cubic root of 7148945 is about 192.6403766099.

The spelling of 7148945 in words is "seven million, one hundred forty-eight thousand, nine hundred forty-five".