7561149 has 4 divisors (see below), whose sum is σ = 10081536. Its totient is φ = 5040764.

The previous prime is 7561123. The next prime is 7561157. The reversal of 7561149 is 9411657.

7561149 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7561149 - 2¹³ = 7552957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7561349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260189 + ... + 1260194.

It is an arithmetic number, because the mean of its divisors is an integer number (2520384).

Almost surely, 2^7561149 is an apocalyptic number.

It is an amenable number.

7561149 is a deficient number, since it is larger than the sum of its proper divisors (2520387).

7561149 is a wasteful number, since it uses less digits than its factorization.

7561149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520386.

The product of its digits is 7560, while the sum is 33.

The square root of 7561149 is about 2749.7543526650. The cubic root of 7561149 is about 196.2739211108.

The spelling of 7561149 in words is "seven million, five hundred sixty-one thousand, one hundred forty-nine".