7212537 has 8 divisors (see below), whose sum is σ = 10685280. Its totient is φ = 4808340.

The previous prime is 7212529. The next prime is 7212551. The reversal of 7212537 is 7352127.

It is not a de Polignac number, because 7212537 - 2³ = 7212529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 267131 = 7212537 / (7 + 2 + 1 + 2 + 5 + 3 + 7).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7212537.

It is not an unprimeable number, because it can be changed into a prime (7212577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133539 + ... + 133592.

It is an arithmetic number, because the mean of its divisors is an integer number (1335660).

Almost surely, 2^7212537 is an apocalyptic number.

It is an amenable number.

7212537 is a deficient number, since it is larger than the sum of its proper divisors (3472743).

7212537 is a wasteful number, since it uses less digits than its factorization.

7212537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267140 (or 267134 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 7212537 is about 2685.6166889562. The cubic root of 7212537 is about 193.2098891586.

The spelling of 7212537 in words is "seven million, two hundred twelve thousand, five hundred thirty-seven".