7212513 has 16 divisors (see below), whose sum is σ = 11990016. Its totient is φ = 3746640.

The previous prime is 7212509. The next prime is 7212523. The reversal of 7212513 is 3152127.

7212513 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7212513 - 2² = 7212509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 7212513.

It is not an unprimeable number, because it can be changed into a prime (7212523) 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, 15381 + ... + 15842.

It is an arithmetic number, because the mean of its divisors is an integer number (749376).

Almost surely, 2^7212513 is an apocalyptic number.

It is an amenable number.

7212513 is a deficient number, since it is larger than the sum of its proper divisors (4777503).

7212513 is a wasteful number, since it uses less digits than its factorization.

7212513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31244.

The product of its digits is 420, while the sum is 21.

The square root of 7212513 is about 2685.6122207050. The cubic root of 7212513 is about 193.2096748538.

The spelling of 7212513 in words is "seven million, two hundred twelve thousand, five hundred thirteen".