7249181 has 4 divisors (see below), whose sum is σ = 7386012. Its totient is φ = 7112352.

The previous prime is 7249141. The next prime is 7249183. The reversal of 7249181 is 1819427.

7249181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1819427 = 89 ⋅20443.

It can be written as a sum of positive squares in 2 ways, for example, as 1768900 + 5480281 = 1330^2 + 2341^2 .

It is a cyclic number.

It is not a de Polignac number, because 7249181 - 2¹⁸ = 6987037 is a prime.

It is a super-2 number, since 2×7249181² = 105101250341522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7249183) 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, 68336 + ... + 68441.

It is an arithmetic number, because the mean of its divisors is an integer number (1846503).

Almost surely, 2^7249181 is an apocalyptic number.

It is an amenable number.

7249181 is a deficient number, since it is larger than the sum of its proper divisors (136831).

7249181 is a wasteful number, since it uses less digits than its factorization.

7249181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136830.

The product of its digits is 4032, while the sum is 32.

The square root of 7249181 is about 2692.4303147900. The cubic root of 7249181 is about 193.5365438306.

The spelling of 7249181 in words is "seven million, two hundred forty-nine thousand, one hundred eighty-one".