7252561 has 4 divisors (see below), whose sum is σ = 7267824. Its totient is φ = 7237300.

The previous prime is 7252559. The next prime is 7252571. The reversal of 7252561 is 1652527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1652527 = 23 ⋅71849.

It is a cyclic number.

It is not a de Polignac number, because 7252561 - 2¹ = 7252559 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7252501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6895 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (1816956).

Almost surely, 2^7252561 is an apocalyptic number.

7252561 is the 1440-th centered heptagonal number.

It is an amenable number.

7252561 is a deficient number, since it is larger than the sum of its proper divisors (15263).

7252561 is a wasteful number, since it uses less digits than its factorization.

7252561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15262.

The product of its digits is 4200, while the sum is 28.

The square root of 7252561 is about 2693.0579273384. The cubic root of 7252561 is about 193.5666185786.

The spelling of 7252561 in words is "seven million, two hundred fifty-two thousand, five hundred sixty-one".