7213755 has 16 divisors (see below), whose sum is σ = 11610144. Its totient is φ = 3824640.

The previous prime is 7213751. The next prime is 7213769. The reversal of 7213755 is 5573127.

It is not a de Polignac number, because 7213755 - 2² = 7213751 is a prime.

It is a super-2 number, since 2×7213755² = 104076522400050, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (7213751) 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 15 ways as a sum of consecutive naturals, for example, 1387 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (725634).

Almost surely, 2^7213755 is an apocalyptic number.

7213755 is a deficient number, since it is larger than the sum of its proper divisors (4396389).

7213755 is a wasteful number, since it uses less digits than its factorization.

7213755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846.

The product of its digits is 7350, while the sum is 30.

The square root of 7213755 is about 2685.8434429430. The cubic root of 7213755 is about 193.2207644996.

The spelling of 7213755 in words is "seven million, two hundred thirteen thousand, seven hundred fifty-five".