7213563 has 16 divisors (see below), whose sum is σ = 12213760. Its totient is φ = 4121928.

The previous prime is 7213561. The next prime is 7213567. The reversal of 7213563 is 3653127.

It is a happy number.

It is not a de Polignac number, because 7213563 - 2¹ = 7213561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (7213561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18895 + ... + 19272.

It is an arithmetic number, because the mean of its divisors is an integer number (763360).

Almost surely, 2^7213563 is an apocalyptic number.

7213563 is a deficient number, since it is larger than the sum of its proper divisors (5000197).

7213563 is a wasteful number, since it uses less digits than its factorization.

7213563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38183 (or 38177 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 7213563 is about 2685.8076997432. The cubic root of 7213563 is about 193.2190502414.

It can be divided in two parts, 7213 and 563, that added together give a 5-th power (7776 = 6⁵).

The spelling of 7213563 in words is "seven million, two hundred thirteen thousand, five hundred sixty-three".