7148561 has 12 divisors (see below), whose sum is σ = 8678592. Its totient is φ = 5860008.

The previous prime is 7148521. The next prime is 7148597. The reversal of 7148561 is 1658417.

It is a happy number.

It is not a de Polignac number, because 7148561 - 2⁶ = 7148497 is a prime.

It is a super-2 number, since 2×7148561² = 102203848741442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7148501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2045 + ... + 4298.

It is an arithmetic number, because the mean of its divisors is an integer number (723216).

Almost surely, 2^7148561 is an apocalyptic number.

It is an amenable number.

7148561 is a deficient number, since it is larger than the sum of its proper divisors (1530031).

7148561 is a wasteful number, since it uses less digits than its factorization.

7148561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380 (or 6373 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 7148561 is about 2673.6793001405. The cubic root of 7148561 is about 192.6369273723.

The spelling of 7148561 in words is "seven million, one hundred forty-eight thousand, five hundred sixty-one".