7291087 has 4 divisors (see below), whose sum is σ = 7359336. Its totient is φ = 7222840.

The previous prime is 7291073. The next prime is 7291091. The reversal of 7291087 is 7801927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7291087 - 2¹⁵ = 7258319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7291187) 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 3 ways as a sum of consecutive naturals, for example, 33964 + ... + 34177.

It is an arithmetic number, because the mean of its divisors is an integer number (1839834).

Almost surely, 2^7291087 is an apocalyptic number.

7291087 is a deficient number, since it is larger than the sum of its proper divisors (68249).

7291087 is a wasteful number, since it uses less digits than its factorization.

7291087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68248.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 7291087 is about 2700.2012887931. The cubic root of 7291087 is about 193.9087589511.

The spelling of 7291087 in words is "seven million, two hundred ninety-one thousand, eighty-seven".