7248561 has 8 divisors (see below), whose sum is σ = 9678240. Its totient is φ = 4825632.

The previous prime is 7248551. The next prime is 7248581. The reversal of 7248561 is 1658427.

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

It is not a de Polignac number, because 7248561 - 2⁶ = 7248497 is a prime.

It is a Curzon number.

7248561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7248551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930 + ... + 4268.

It is an arithmetic number, because the mean of its divisors is an integer number (1209780).

Almost surely, 2^7248561 is an apocalyptic number.

It is an amenable number.

7248561 is a deficient number, since it is larger than the sum of its proper divisors (2429679).

7248561 is a wasteful number, since it uses less digits than its factorization.

7248561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375.

The product of its digits is 13440, while the sum is 33.

The square root of 7248561 is about 2692.3151747149. The cubic root of 7248561 is about 193.5310261462.

Subtracting from 7248561 its sum of digits (33), we obtain a triangular number (7248528 = T₃₈₀₇).

The spelling of 7248561 in words is "seven million, two hundred forty-eight thousand, five hundred sixty-one".